Chelate synthesis of pyrazolyl(ethoxycarbonyl)ketene aminals, the precursors of functionalized pyrazolo[1,5-c]pyrimidines
摘要:
A scheme for the preparation of novel synthetic reagents, pyrazolyl (ethoxycarbonyl) ketene aminals, from acetyl(ethoxycarbonyl)ketene (N-benzoyl)aminal via its difluoroboron chelate is suggested. The possibility of cyclization of the ketene aminals obtained into functionally substituted pyrazolo[1,5-c]pyrimidines is shown.
Chelate synthesis of pyrazolyl(ethoxycarbonyl)ketene aminals, the precursors of functionalized pyrazolo[1,5-c]pyrimidines
作者:V. A. Dorokhov、M. A. Present、V. S. Bogdanov
DOI:10.1007/bf00700177
日期:1994.12
A scheme for the preparation of novel synthetic reagents, pyrazolyl (ethoxycarbonyl) ketene aminals, from acetyl(ethoxycarbonyl)ketene (N-benzoyl)aminal via its difluoroboron chelate is suggested. The possibility of cyclization of the ketene aminals obtained into functionally substituted pyrazolo[1,5-c]pyrimidines is shown.