Chelate synthesis of 3-ethoxycarbonyl-4-hydroxy-2-trifluoromethylpyridine from ethyl acetoacetate and trifluoroacetonitrile
作者:V. A. Dorokhov、L. S. Vasil'ev、F. E. Surzhikov、V. S. Bogdanov
DOI:10.1007/bf00700905
日期:1995.7
Ethyl 2-acetyl-3-amino-4,4,4-trifluoro-2-butenoate was synthesized by treatment of ethylacetoacetate with CF3CN in the presence of Ni(acac)2. Condensation of the diphenylboron chelate of the former with dimethylformamide dimethylacetal followed by refluxing in ethanol yielded 3-ethoxycarbonyl-4-hydroxy-2-trifluoromethylpyridine.
Synthesis of derivatives of 4-amino-2-trifluoromethylnicotinic acid
作者:L. S. Vasil’ev、F. E. Surzhikov、V. A. Dorokhov
DOI:10.1007/s11172-005-0120-z
日期:2004.10
The method for the synthesis of ethyl 4-R-amino-2-trifluoromethylnicotinates from a diphenylboron complex of ethyl 2-acetyl-3-amino-4,4,4-trifluorobut-2-enoate was developed.