作者:A. M. Shestopalov、O. P. Bogomolova、V. P. Litvinov
DOI:10.1055/s-1991-26445
日期:——
Interaction of 1-(1-adamantylcarbonylmethyl)pyridinium bromide (1) with arylmethylenecyanothioacetamides 2 proceeds stereoselectively with formation of 2-(1-adamantylcarbonyl)-5-amino-3-aryl-4-cyano-2,3-dihydrothiophenes. Dihydrothiophenes were obtained in a good yield by three-component condensation of pyridinium bromide 1, aldehydes and cyanothioacetamide in presence of triethylamine.
An Improved Stereoselective Synthesis of 5-Acyl-2-amino-4-aryl-3-cyano-4,5-dihydrothiophenes
作者:Aleksandr V. Samet、Anatolij M. Shestopalov、Vladimir N. Nesterov、Victor V. Semenov
DOI:10.1055/s-1997-1396
日期:1997.6
Sulfonium ylides generated from precursor bromides 2 react readily with arylidenecyanothioacetamides 1 to afford the title compounds with trans-configuration.