Zhu, Shan-Shan’s team published research in ACS Catalysis in 12 | CAS: 91-02-1

ACS Catalysis published new progress about 91-02-1. 91-02-1 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene,Ketone, name is Phenyl(pyridin-2-yl)methanone, and the molecular formula is C19H34ClN, Safety of Phenyl(pyridin-2-yl)methanone.

Zhu, Shan-Shan published the artcilePolymerization-Enhanced Photocatalysis for the Functionalization of C(sp3)-H Bonds, Safety of Phenyl(pyridin-2-yl)methanone, the publication is ACS Catalysis (2022), 12(1), 126-134, database is CAplus.

A series of conjugated polymeric photocatalysts (CPPs) based on 1,2,3,5-tetrakis(carbazol-9-yl)4,6-dicyanobenzene (4CzIPN) were synthesized via nucleophilic substitution reaction and Sonogashira-Hagihara coupling. Among the as-prepared CPPs (CPP1-CPP6), CPP3 [the copolymer of a tetrakis(dibromocarbazolyl)isophthalonitrile with 1,3,5-triethynylbenzene] was selected as the optimized heterogeneous photocatalyst for visible-light-driven functionalization of C(sp3)-H bonds to synthesize 87 final products with yields up to 99%. The heterogeneous photocatalyst CPP3 is easily recovered from the reaction with excellent retention of photocatalytic activity, which can be reused at least for five times. Time-dependent d. functional theory (TD-DFT) calculations demonstrate that the photocatalysis performance of CPP3 is superior to the corresponding monomer 4CzIPN because of the enhanced intersystem crossing (ISC) process. Spin-orbit coupling calculations prove that the rate constant of ISC outcompetes that of reverse intersystem crossing (RISC). The rapidly generated and long-lived triplet state T1 is considered to be a more accessible excited state than the singlet-state S1 generated from either direct excitation or RISC. The successful application of this polymerization-enhanced photocatalysis strategy should guide a metal-free approach to the rational design of CPP-type heterogeneous photocatalysts to address the dilemma of homogeneous photocatalysts in sustainability, stability, and recyclability.

ACS Catalysis published new progress about 91-02-1. 91-02-1 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene,Ketone, name is Phenyl(pyridin-2-yl)methanone, and the molecular formula is C19H34ClN, Safety of Phenyl(pyridin-2-yl)methanone.

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