52133-67-2, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 52133-67-2, name is Ethyl 2-cyano-4,4-diethoxybutyrate belongs to nitriles-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.
Method AJ: 2-(Pyridin-3-yl)-7H-pyrrolo[2,3-d]pyrimidin-4-ol (xliii) To a solution of nicotinimidamide (5.03 g, 41.6 mmol, 1.2 eq.) in EtOH (100 mL), was added NaOMe (4.8 g, 88.8 mmol, 2.5 eq.). The mixture was stirred at room temperature for 4 h. The reaction mixture was added to ethyl 2-cyano-4,4-diethoxybutanoate (8.00 g, 34.9 mmol, 1 eq.). This mixture was stirred at 105¡ã C. overnight. After cooling, the reaction mixture was acidified with conc. HCl and stirred at room temperature for 2 h. A precipitate formed and was collected and washed with H2O (20 mL*2). After lyophilization, 3.10 g of product was obtained as a gray yellow solid (yield 41.8percent). LCMS m/z=213.1 (M+1) (Method B) (retention time=1.07 min). 1H NMR (400 MHz, DMSO-d6): delta 12.26 (s, 1H), 12.04 (s, 1H), 9.23 (d, J=1.6 Hz, 1H), 8.70 (dd, J=4.8, 1.2 Hz, 1H), 8.43-8.40 (m, 1H), 7.55 (dd, J=8.0, 4.8 Hz, 1H), 7.12 (d, J=1.6 Hz, 1H), 6.51 (d, J=2.8 Hz, 1H).
The synthetic route of Ethyl 2-cyano-4,4-diethoxybutyrate has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Suzuki, Masaki; Kondo, Kazumi; Kurimura, Muneaki; Valluru, Krishna Reddy; Takahashi, Akira; Kuroda, Takeshi; Takahashi, Haruka; Fukushima, Tae; Miyamura, Shin; Ghosh, Indranath; Dogra, Abhishek; Harriman, Geraldine; Elder, Amy; Shimizu, Satoshi; Hodgetts, Kevin J.; Newcom, Jason S.; US2015/307477; (2015); A1;,
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