New method for the synthesis of substituted thieno[3,2-b]pyridines and 5H-pyrano[2,3-d]thieno[3,2-b]pyridines derived from them
作者:N. A. Larionova、A. A. Zubarev、L. A. Rodinovskaya、A. M. Shestopalov
DOI:10.1007/s11172-013-0182-2
日期:2013.5
A new highly selective method was developed for the synthesis of substitutedthieno[3,2-b]-pyridines based on the domino reaction of monopotassium salt (rather than dipotassium one) of carbamoylcyanodithioacetic acid with ethyl 4-chloroacetoacetate. Substituted 5H-pyrano[2,3-d]-thieno[3,2-b]pyridines were synthesized based on these thieno[3,2-b]pyridines.