Category: 971-66-4

Updegraff, D. M. published the artcileTriarylborane complexes, a new series of broad-spectrum germicides, Application of Triphenyl(pyridin-1-ium-1-yl)borate, the publication is Journal of Infectious Diseases (1964), 304-10, database is CAplus.

More than 100 coordination complexes of triarylboranes with amines and substituted phosphines were screened against bacteria and fungi, and selected members were also screened against protozoa. The chem. stable complexes of triphenylborane and tris(para-substituted phenyl)borane were powerful broad-spectrum germicides, fungicides, and protozoicides.

Journal of Infectious Diseases published new progress about 971-66-4. 971-66-4 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is Triphenyl(pyridin-1-ium-1-yl)borate, and the molecular formula is C19H22BNO5, Application of Triphenyl(pyridin-1-ium-1-yl)borate.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Torssell, Kurt published the artcilePositive halogen compounds. VI. Preparation of alkoxydimethylsulfonium salts and their role in the Kornblum oxidation. Revision of the structure for the olefin-bromotrinitromethane adduct, Quality Control of 971-66-4, the publication is Acta Chemica Scandinavica (1947-1973) (1967), 21(1), 1-14, database is CAplus.

cf. CA 63: 6839b; 65: 19963b. Structure I for the reaction product of BrC(NO2)3 and cyclohexene was revised to II (R = 2-trans-bromocyclohexyl) (III). Treatment of 0.2 g. III in 1 ml. EtOAc with 0.2 g. NaBPh4 gave ROS+Me2B-Ph4 (IV, R = 2-bromocyclohexyl) (V), m. 138-40° (decomposition). III (0.2 g.) was heated with 1 ml. iso-BuOH at 55-6° 45 min. and treated with 0.2 g. NaBPh4 in 1 ml. EtOAc to give 0.19 g. IV (R = iso-Bu) (VI) m. 141-3° (decomposition). ClCO2Bu-iso prepared from 0.16 g. iso-BuOH and a slight excess of COCl2 (10% in ether) was treated, after evaporation of ether, with 1 ml. Me2SO and, after 0.5 hr., 0.7 g. NaBPh4 in 6 ml. 1:1 MeOH-water mixture to give 0.4 g. IV (R = Et), m. 150-60°, remelts ∼260°. III (1 g.) in 4 ml. MeOH kept at 40-50° 20 min., evaporated to half volume in vacuo, and treated with 10 ml. CCl4 to give 0.55 g. II (R = Me). II (R = Me) (0.25 g.) in 1 ml. MeOH was treated with 0.4 g. NaBPh4 in 1 ml. MeOH to give 0.38 g. IV (R = Me) (VII). Me2SO (0.3 g.) was mixed with 0.5 g. Me2SO4, kept at room temperature 24 hrs., treated with 0.75 g. KC(NO2)3 in 5 ml. dimethoxyethane, filtered from KMeSO4, concentrated to 0.5 volume in vacuo, and treated with 10 ml. CCl4 to give 0.3 g. VII, m. 51-2° (decomposition). Treatment of a mixture of 0.5 g. Me2SO4 and 0.3 g. Me2SO with 1.4 g. NaBPh4 in 10 ml. MeOH gave 0.9 g. VII. A bromonium ion (VIII) is suggested. VII (0.2 g.) was heated to 190° in a small bulb tube until gas evolution ceased (∼10 min.) to give 40 mg. condensate composed of benzene and MeOCH2SMe (ir and N.M.R.); the remainder was partially crystalline and gave Ph3BOSMe2 (IX), m. 160-3°. IX can also be obtained by addition of 0.1 ml. concentrated HCl to 0.2 g. NaBPh4 in 2 ml. water. Treatment of 50 mg. IX in 3 ml. EtOAc with 50 mg. pyridine gave Ph3BQ (Q = 1-pyridyl), m. 210° (decomposition), which was also obtained by Pfitzner-Moffat oxidation Pyrolysis of V at 130-40° 5 min. gave mostly benzene and a small amount IX, and pyrolysis of V in Me2SO gave a somewhat higher yield of carbonyl compounds and trans-2-bromocyclohexanol. Thus, the Kornblum oxidation and Barton’s modification (CA 61: 2958e) proceeds via an intermediary sulfonium ion, which collapses to a carbonyl compound and Me2S either by the reaction (1) or a cyclic mechanism (2), giving Me2S and CD3SCD2H when Me2CHCH2OS+(CD3)2B-Ph4 was pyrolyzed. The oxidation follows the mechanism (1) only if the α-proton is activated as in p-BrC6H4COCH2OS+Me2. A mechanism (3) for Pfitzner and Moffat oxidation (CA 64: 6709g) was suggested to proceed via a complex (X). Magnetic nonequivalence for S-methyl resonance peak of V (a doublet, separation 1.7 Hz.) was found. N.M.R. spectrum of VII or II (R = Me) underwent a drastic change when the compounds were heated in (CD3)2SO at 65°. After 1 hr., the absorption of SMe at δ = 3.29 disappeared and a new peak appeared at δ = 2.57 ppm. The peak at δ = 3.97 ppm. had the same intensity as before and only traces of Me2S were detected. The result suggested a carbonium ion exchange (4) comparable with proton exchange in water. The reaction is completely reversible because when XI was dissolved in Me2SO, VII was regenerated. Addition of NaI to VII gave a rapid change of spectrum showing a reaction, Me2SO+Me + NaI → Me2SO + MeI + Na+. Pyrolysis of VII to MeOCH2SMe resembles the Pummerer rearrangement.

Acta Chemica Scandinavica (1947-1973) published new progress about 971-66-4. 971-66-4 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is Triphenyl(pyridin-1-ium-1-yl)borate, and the molecular formula is C10H10CoF6P, Quality Control of 971-66-4.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Thomas, K. V. published the artcileThe environmental fate and behaviour of antifouling paint booster biocides: A review, Related Products of pyridine-derivatives, the publication is Biofouling (2001), 17(1), 73-86, database is CAplus.

A review with references Antifouling paint booster biocides are a group of organic compounds added to antifouling paints to improve their efficacy. They have become prevalent since the requirement for alternative antifouling paints formulations for small boats (<25m). This need followed a ban on the use of triorganotin biocides in antifouling paints for small boats, in the late 1980’s. Worldwide, around eighteen compounds are currently used as antifouling biocides, viz. benzmethylamide, chlorothalonil, copper pyrithione, dichlofluanid, diuron, fluorofolpet, Irgarol 1051, Sea-Nine 211, Mancozeb, Polyphase, pyridine-triphenylborane, TCMS (2,3,5,6-tetrachloro-4-methylsulfonyl pyridine), TCMTB [2-(thiocyanomethylthio)benzothiazole], Thiram, tolylfluanid, zinc pyrithione (ZPT), ziram and Zineb. Any booster biocide released into the environment is subjected to a complex set of processes. These processes include transport mechanisms, transformation, degradation, cross media partitioning, and bioaccumulation. This paper reviews the fate and behavior data currently available in the public domain concerning antifouling paint booster biocides.

Biofouling published new progress about 971-66-4. 971-66-4 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is Triphenyl(pyridin-1-ium-1-yl)borate, and the molecular formula is C5H5F3O2, Related Products of pyridine-derivatives.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Namekawa, Keisuke published the artcileMarine paint development trend and forecast. Environmental regulation related to the antifouling paints for the ship bottom and the corresponding antifouling agents, Formula: C23H20BN, the publication is Toso Gijutsu (2006), 45(8), 63-66, database is CAplus.

A review. The regulation for the ship bottom fouling prevention agents in Europe, the biocide product directive, the control of the antifouling agents for the paints for the ship bottom in Japan, the selection of the effective components of the antifouling agents, the toxicity of the antifouling agents for the ship bottom, and the examples of the degradability and accumulation properties of Zinc Omadine (zinc pyrithione), Copper Omadine (copper pyrithione), and Borocide P (triphenylboronpyridine) are reviewed.

Toso Gijutsu published new progress about 971-66-4. 971-66-4 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is Triphenyl(pyridin-1-ium-1-yl)borate, and the molecular formula is C23H20BN, Formula: C23H20BN.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Appelhans, Dietmar published the artcileOligosaccharide-modified poly(propyleneimine) dendrimers: synthesis, structure determination, and Cu^II complexation, SDS of cas: 971-66-4, the publication is Macromolecular Bioscience (2007), 7(3), 373-383, database is CAplus and MEDLINE.

The multiple application of reductive amination on primary amino groups of first and second generation poly(propyleneimine) dendrimers is used as a one-pot approach to introduce twice the amount of the oligosaccharide units as surface groups, compared to initially present amino groups in the first and second generation dendrimers. This was proven by ¹H NMR, MALDI-TOF-MS, and LILBID-MS anal. The size of these dendrimers was determined by the hydrodynamic radius using pulsed field gradient NMR and dynamic light scattering. Mol. modeling confirmed the presence of dense-shell dendrimers. These dendrimers exhibit a generation dependent Cu^II/dendrimer ratio in an aqueous environment, highlighting these materials as possible metal-carrier systems with a well-defined oligosaccharide protection shell for application in a biol. environment.

Macromolecular Bioscience published new progress about 971-66-4. 971-66-4 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is Triphenyl(pyridin-1-ium-1-yl)borate, and the molecular formula is C23H20BN, SDS of cas: 971-66-4.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Yu, Hao-jie published the artcileResearch on biofilm gel antifouling technology, Computed Properties of 971-66-4, the publication is Xiandai Huagong (2013), 33(4), 87-90, database is CAplus.

The biodegradable antifouling coating and the biodegradable resin synthesized by MCRI are introduced. The biodegradable resin has oligomeric lactic acid as the main structural units containing block structures. The recent progress of biodegradable environment-friendly antifouling paints by MCRI are summarized. The biodegradable/biofilm gel antifouling new technol. is put forward. Its latest research progress is proposed as well.

Xiandai Huagong published new progress about 971-66-4. 971-66-4 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is Triphenyl(pyridin-1-ium-1-yl)borate, and the molecular formula is C7H6O3, Computed Properties of 971-66-4.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Wang, Jianbing published the artcileMarine environmental risk assessment method for active substances used in antifouling systems on ships in China, Category: pyridine-derivatives, the publication is Advanced Materials Research (Durnten-Zurich, Switzerland) (2014), 962-972, database is CAplus.

A Chinese risk assessment procedure was developed to address active substances used in biol. active (biocidal) antifouling paints. The priority was to promote the use of environmentally friendly, tech. and economically viable alternatives to DDT/TBT (dichlorodiphenyltrichloroethane/tributyltin) in the control of marine fouling organisms. The procedure was based upon European Union Biocide Product Directive (EU-BPD) and International Standard Organization (ISO) method for the Environmental risk assessment of antifouling systems. In order to focus on Chinese national conditions, international templates were adapted to address regional differences. In the Chinese method, persistence, bioaccumulation and toxicity information is assessed on a step by step basis, allowing an antifouling substance to be defined as either “Risk of high concern” or “Relatively low risk” at the end of the decision making process. 4,5-Dichloro-2-n-Octyl-3-Isothiazolinone (DCOIT, Sea-nine), triphenylborane pyridine (TPBP), 8-methyl-N-vanillyl-6-nonenamide (Capsaicin) and Zinc ethylene(bis) dithiocarbamate (Zineb), popularly used in China as active substance of antifouling paints, were reviewed according to the developed procedure. The preliminary results indicate that Sea-nine use in antifouling products can be considered low risk, whereas TPBP, Capsaicin and Zineb failed the screening procedure on the basis of bioaccumulation potential, persistence and an unacceptable risk ratio, resp. Data availability was determined to be a critical factor in the assessments due to the application of Safety Factors for data-poor substances.

Advanced Materials Research (Durnten-Zurich, Switzerland) published new progress about 971-66-4. 971-66-4 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is Triphenyl(pyridin-1-ium-1-yl)borate, and the molecular formula is C17H14F3N3O2S, Category: pyridine-derivatives.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Cao, Jingyi published the artcilePreparation and property of environmental friendly copper-free self-polishing antifouling coatings, COA of Formula: C23H20BN, the publication is Tuliao Gongye (2015), 45(3), 33-36, database is CAplus.

Title coatings were prepared from zinc-acrylate polymer as matrix, pyrithione zinc (ZnPT) and pyridine tri-Ph borane (PK) as biocides and other pigments. The basic properties of the antifouling coatings with different organic biocides are studied. Meanwhile, the antifouling property of the prepared coatings has been compared with that of the similar imported product via offshore immersion test. The title coatings comprising ZnPT and PK at mass ratio of 6:4 can exhibit excellent antifouling property.

Tuliao Gongye published new progress about 971-66-4. 971-66-4 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is Triphenyl(pyridin-1-ium-1-yl)borate, and the molecular formula is C23H20BN, COA of Formula: C23H20BN.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Takahashi, Kazunobu published the artcileDetermination of release rate of pyridine-triphenylborane (PTPB) from copper-free antifouling paints, COA of Formula: C23H20BN, the publication is Shikizai Kyokaishi (2005), 78(2), 50-57, database is CAplus.

Pyridine-triphenylborane (PTPB) is one of the alternative tin-free antifoulants in marine antifouling paints and was used widely in com. copper-free self-polishing antifouling paints in Japan. Anal. method for determination of PTPB at low ppb level in seawater was developed by HPLC with UV detection at 220 nm after pre-concentration with C18 solid-phase extraction (SPE). PTPB leached from an antifouling paint film was extracted from artificial seawater using a C18 solid-phase extraction (SPE) cartridge, and eluted with acetonitrile/pyridine (99:1). The recoveries of PTPB (25 μg/1 and 50 μg/l) spiked into artificial seawater were 96% and 97%, resp. The limit of determination of PTPB using 100 mL of artificial seawater was 0.5 μg/l for this anal. method. The HPLC-UV using SPE was applied onto measurement of the release rate (μg/cm²/day) of PTPB from copper-free antifouling paints containing PTPB according to both ISO 15181-1 and 15181-2.

Shikizai Kyokaishi published new progress about 971-66-4. 971-66-4 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is Triphenyl(pyridin-1-ium-1-yl)borate, and the molecular formula is C6H12N2O, COA of Formula: C23H20BN.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Kaewchuay, Netnapit published the artcileA novel hybrid mode of sample injection to enhance CZE sensitivity for simultaneous determination of a pyridine-triphenylborane anti-fouling agent and its degradation products, Synthetic Route of 971-66-4, the publication is Electrophoresis (2011), 32(12), 1486-1491, database is CAplus and MEDLINE.

We developed a novel hybrid sample injection mode (HSIM) that presents the combination of electrokinetic injection and vacuum injection to enhance detection sensitivity in CZE. Samples were introduced using both vacuum and electrokinetic injections simultaneously, with a water plug injected into the capillary prior to sample introduction (i.e. similarly to field-amplified sample injection, FASI). Using a sample mixture containing an anti-fouling agent applied to ship hulls, pyridine-triphenylborane and its degradation products (diphenylborinic acid, phenylboronic acid, and phenol) dissolved in ACN, the length of water plug, time, and voltage for sample introduction were optimized. The signal intensity (peak height) was found to be up to a 30-fold increased using HSIM by applying 4 kV for 4 s at the inlet end of the capillary as the cathode with supplementary vacuum in comparison with only vacuum injection for 4 s. The LODs (at a S/N of 3) for pyridine-triphenylborane, diphenylborinic acid, phenylboronic acid, and phenol were 0.88, 1.0, 21, and 23 μg/L, resp. At the level of 0.04 mg/L, the RSDs (n=4, intra-day) for the above analytes were in the ranges of 1.9-11, 4.3-9.2, and 0.34-0.66% for peak area, peak height, and migration time, resp. The HSIM is a simple and promising procedure useful for enhancing the sensitivity for both low-and high-mobility ions in CZE.

Electrophoresis published new progress about 971-66-4. 971-66-4 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is Triphenyl(pyridin-1-ium-1-yl)borate, and the molecular formula is C23H20BN, Synthetic Route of 971-66-4.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem