A FACILE SYNTHESIS OF ETHYL-2-METHYL-5-ARYL-5H-CHROMENO-[3,4-c]PYRIDINE-1-CARBOXYLATES
摘要:
Flav-4-ones on reaction with DMF/POCl3 gave 4-chloro-2-aryl-2H-chromene-3-carbaldehydes which on reaction with ethyl-3-aminocrotonate give under Hantszch reaction conditions ethyl-2-methyl-5-aryl-5H-chromeno[3,4-c]pyridine-1-carboxylates in good yields.
A FACILE SYNTHESIS OF ETHYL-2-METHYL-5-ARYL-5H-CHROMENO-[3,4-c]PYRIDINE-1-CARBOXYLATES
作者:M. Venkati、G. L. David Krupadanam
DOI:10.1081/scc-100105383
日期:2001.1.1
Flav-4-ones on reaction with DMF/POCl3 gave 4-chloro-2-aryl-2H-chromene-3-carbaldehydes which on reaction with ethyl-3-aminocrotonate give under Hantszch reaction conditions ethyl-2-methyl-5-aryl-5H-chromeno[3,4-c]pyridine-1-carboxylates in good yields.
Synthesis of 5-aryl-2-piperidino-5H-chromeno[3,4-c]pyridine-1-carbonitriles
作者:M. Venkati、S. Satyanarayana Reddy、G. Y. S. K. Swamy、K. Ravikumar、G. L. David Krupadanam
DOI:10.3998/ark.5550190.0013.632
日期:——
Chloro-2-aryl-2H-3-chromenecarbaldehydes 3a-g on reaction with malononitrile in ethanol in the presence of piperidine gave 5-aryl-2-piperidino-5H-chromeno(3,4-c)pyridine-1-carbonitriles 4a-g in good yields.