Palladium-catalyzed phosphorylation of arylsulfonium salts with P(O)H compounds <i>via</i> C–S bond cleavage
作者:Huijin Liu、Kai Sun、Xiaolan Li、Jie Zhang、Wei Lu、Xuzhong Luo、Haiqing Luo
DOI:10.1039/d2ra04297e
日期:——
Herein we report a novel palladium-catalyzed phosphorylation of arylsulfonium salts with P(O)H compounds via C–S bondcleavage under mild conditions. The protocol provides a pragmatic strategy applicable to the synthesis of diverse arylphosphonates.
Cyclopropanation Reactions of Pyroglutamic Acid-Derived Synthons with Akylidene Transfer Reagents
作者:Rui Zhang、Ahmed Mamai、Jose S. Madalengoitia
DOI:10.1021/jo9816109
日期:1999.1.1
The cyclopropanation of unsaturated lactams 1 and 3 derived from pyroglutamic acid with nucleophilic alkylidene transfer reagents is investigated. Good-to-modest yields of cyclopropanes were obtained with most sulfur ylides explored. Syn/anti selectivity was found to be dependent on the synthon as well as the sulfur ylide. This cyclopropanation methodology is used in the synthesis of arginine and glutamic acid analogues.