Stereoselective Synthesis of 2-Carbamoyl-2-cyanocyclopropanecarboxylates by Tandem Oxidative Cyclization and Neighboring Group-Assisted Decarboxylation
摘要:
In this paper. we report a facile synthesis of 2-carbamoyl-2-cyanocyclopropanecarboxylates through a tandem iodosobenzene/tetrabutylammonium iodide-induced oxidative cyclization and a subsequent neighboring group-assisted decarboxylation of the Michael adducts of 2-eyanoacetamides with alpha,beta-unsaturated malonates. This method affords the desired highly functionalized cyclopropanes in moderate to good yields and with excellent chastereo selectivities. In addition, the reaction proceeds smoothly under mild conditions and with good functional group tolerance
Stereoselective Synthesis of 2-Carbamoyl-2-cyanocyclopropanecarboxylates by Tandem Oxidative Cyclization and Neighboring Group-Assisted Decarboxylation
摘要:
In this paper. we report a facile synthesis of 2-carbamoyl-2-cyanocyclopropanecarboxylates through a tandem iodosobenzene/tetrabutylammonium iodide-induced oxidative cyclization and a subsequent neighboring group-assisted decarboxylation of the Michael adducts of 2-eyanoacetamides with alpha,beta-unsaturated malonates. This method affords the desired highly functionalized cyclopropanes in moderate to good yields and with excellent chastereo selectivities. In addition, the reaction proceeds smoothly under mild conditions and with good functional group tolerance
Stereoselective Synthesis of 2-Carbamoyl-2-cyanocyclopropanecarboxylates by Tandem Oxidative Cyclization and Neighboring Group-Assisted Decarboxylation
作者:Hua Wang、Renhua Fan
DOI:10.1021/jo1014245
日期:2010.10.15
In this paper. we report a facile synthesis of 2-carbamoyl-2-cyanocyclopropanecarboxylates through a tandem iodosobenzene/tetrabutylammonium iodide-induced oxidative cyclization and a subsequent neighboring group-assisted decarboxylation of the Michael adducts of 2-eyanoacetamides with alpha,beta-unsaturated malonates. This method affords the desired highly functionalized cyclopropanes in moderate to good yields and with excellent chastereo selectivities. In addition, the reaction proceeds smoothly under mild conditions and with good functional group tolerance