Stereospecific synthesis of phosphono-(1Z,3E)-dienyl compounds from β-phenyltelluro-vinylphosphonates and -vinylphosphine oxides
摘要:
Phosphono-1,3-dienyl compounds 2 can be prepared by palladium cross-coupling reaction of beta-phenyltelluro-vinylphosphonates or -vinylphosphine oxides with alkenes in the presence of a catalytic amount of PdCl2 and AcOAg as reoxidant agent at room temperature. The coupling reaction is stereospecific and the compounds 2 were obtained in good yields with total retention of configuration. (C) 2003 Elsevier B.V. All rights reserved.
Synthesis and reaction of β-organyltelluro vinylphosphonates and vinyl sulfones
作者:Won Bum Jang、Dong Young Oh、Chi-Wan Lee
DOI:10.1016/s0040-4039(00)00782-6
日期:2000.6
Reactions of organyl tellurols generated in situ from ditellurides and alkynes bearing electron-stabilizing groups such as the phosphonyl and sulfonyl groups gave the beta-organyltelluro vinylphosphonates or vinyl sulfones in high yield, which are followed by transmetallation by organometallic reagents. (C) 2000 Elsevier Science Ltd. All rights reserved.