The reactions of potassium 2-indolizinethiolates having an ester group at the 3-position with some electron deficient acetylenic compounds were investigated. Their Michael additions or Michael addition-cyclizations proceeded with the elimination of an ester group to provide the corresponding 2-vinylthioindolizine and 4H-thiino[2,3-b]indolizin-4-one derivatives.
The reactions of potassium 2-indolizinethiolates having an ester group at the 3-position with some electron deficient acetylenic compounds were investigated. Their Michael additions or Michael addition-cyclizations proceeded with the elimination of an ester group to provide the corresponding 2-vinylthioindolizine and 4H-thiino[2,3-b]indolizin-4-one derivatives.
The reactions of potassium 2-indolizinethiolates having an ester group at the 3-position with some electron deficient acetylenic compounds were investigated. Their Michael additions or Michael addition-cyclizations proceeded with the elimination of an ester group to provide the corresponding 2-vinylthioindolizine and 4H-thiino[2,3-b]indolizin-4-one derivatives.