|
|||||
|
|
Chemoselective synthesis of phosphorus ylides through the reaction of 2-mercaptobenzimidazole and 2-hydroxybenzimidazole with triphenylphosphine and acetylenic esters |
|
| Abstract: | A one-step synthesis of dialkyl 2-(2-mercaptobenzimidazole-s-yl)-3-(triphenylphosphoranyliden) succinates and dialkyl 2-(2-hydroxybenzimidazole-n-yl)-3-(triphenylphosphoranyliden) succinates in fair yields are reported through the reaction of dialkyl acetylenedicarboxylates and triphenylphosphine in the presence of 2-mercaptobenzimidazole or 2-hydroxybenzimidazole. |
| Keywords: | Chemoselective Acetylenic esters 2-Mercaptobenzimidazole Triphenylphosphine Stable phosphorus ylide Geometrical isomers |