Xin Ge, Han-geng Chen, Changnian Cao
Jan 28, 2011
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Influential Citations
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Journal
Research on Chemical Intermediates
Abstract
An improved and commercially valuable process is developed for the scalable synthesis of 2-chloro-3-amino-4-methylpyridine (CAPIC), a key intermediate of Nevirapine. The synthesis was accomplished in four steps, featuring condensation starting from 4,4-dimethoxyl-2-butanone and cyanoacetamide with ammonium acetate and acetic acid as catalysts. The total yield of the process is 62.1%. The pure CAPIC sample was confirmed with FTIR, 1H NMR, and 13C NMR spectra.