Electric Literature of 179687-79-7, Adding some certain compound to certain chemical reactions, such as: 179687-79-7, name is 2-((2-Chloro-4-nitrophenoxy)methyl)pyridine,molecular formula is C12H9ClN2O3, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 179687-79-7.
Preparation of 3-chloro-4-(2-pyridylmethoxy)aniline from the nitrobenzene product of Example 1 was accomplished with catalytic hydrogenation using platinum on carbon. A typical hydrogenation was done using 6 volumes of THF, 2% by weight of 5% Pt/C (50% water wet), at 25 psi and at 25-30 C. for approximately 4-6 hours. The reaction is slightly exothermic and the temperature will rise to about 30-35 C. Cooling is necessary to maintain the temperature below 30 C. As a specific example, a mixture of 3-chloro-4-(2-pyridylmethoxy)nitrobenzene (0.15 kg, 0.57 mole) and 2% (w/w) of 5% Pt/C (6.0 g) in tetrahydrofuran (0.90 L) was hydrogenated at 25 psi for at least 5 hours. The mixture was filtered through a celite pad and washed with tetrahydrofuran (0.60 L). The filtrate was distilled to a volume of about 0.75 L and ethanol (1.12 L) was added. Distillation was continued to a volume of about 0.75 L and ethanol (2.85 L) was added. The mixture may be used ?as is? in the step of Example 3 below. ; Performing the hydrogenation in isopropyl alcohol (IPA), methanol (MeOH), or ethanol (EtOH) may result in the product being contaminated with late eluting impurity that partially precipitates out on standing in solution. It was found that performing the hydrogenation in a solvent where both the product and starting material are soluble, such as tetrahydrofuran (THF), resulted in greater product purity and required much less solvent. Thus, THF is a preferred solvent for this step. Experimental results showing the effect of different reaction conditions are shown in Table 2. For the larger scale runs, the first aniline intermediate was not isolated (?NI?) before proceeding with the next step. TABLE 2 Hydrogenation to Form First Aniline Intermediate 5% Scale (g) Pt/C** Solvent Vol Time (h) Yield (%) 2.0 1 IPA 50 3 79.6 18 2.0 5 EtOH 60 3100* 10 1 THF 10 4 94.5 7 10 1 EtOH 10 3 95.6 30 1.05 THF 6.5 12 96.3 14 100 2 THF 6 4.5 97.1 400 2 THF 6 4 NI 500 2 THF 6 4 NI 100 2 THF 6 5 NI 150 2 THF 6 5 NI 7 *Solid impurities noted after reaction completion. **percent by weight of starting material.
According to the analysis of related databases, 179687-79-7, the application of this compound in the production field has become more and more popular.
Reference:
Patent; WYETH; US2006/270668; (2006); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem