《Organocatalytic trans Phosphinoboration of Internal Alkynes》 was written by Fritzemeier, Russell G.; Nekvinda, Jan; Vogels, Christopher M.; Rosenblum, Carol Ann; Slebodnick, Carla; Westcott, Stephen A.; Santos, Webster L.. Recommanded Product: 623-47-2 And the article was included in Angewandte Chemie, International Edition in 2020. The article conveys some information:
We report the first trans phosphinoboration of internal alkynes. With an organophosphine catalyst, alkynoate esters and the phosphinoboronate Ph2P-Bpin are efficiently converted into the corresponding trans-α-phosphino-β-boryl acrylate products in moderate to good yield with high regio- and Z-selectivity. This reaction operates under mild conditions and demonstrates good atom economy, requiring only a modest excess of the phosphinoboronate. X-ray crystallog. experiments allowed structural assignment of the unprecedented and densely functionalized (Z)-α-phosphino-β-boryl acrylate products. After reading the article, we found that the author used Ethyl propiolate(cas: 623-47-2Recommanded Product: 623-47-2)
Ethyl propiolate(cas: 623-47-2) is a clear colorless to pale yellow liquid that is soluble in ethanol, ether and chloroform. It an important organic chemical raw material and pharmaceutical intermediate. Ethyl propargylate is obtained by oxidation of propargyl alcohol to propargylic acid followed by esterification.Recommanded Product: 623-47-2
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics