Direct Aerobic Oxidative Esterification and Arylation of P(O)–OH Compounds with Alcohols and Diaryliodonium Triflates
摘要:
Copper-catalyzed aerobic oxidative esterification of P(O)-OH compounds is achieved using alcohols as efficient esterification reagents, giving the expected products with good to moderate yields. Furthermore, it is shown that the arylation of P(O)-OH compounds proceeds efficiently to produce the corresponding products via the treatment of diaryliodonium triflates under mild reaction conditions. It is a simple way to produce a broad spectrum of functionalized phosphinates, phosphonates, and phosphates from basic starting materials with good to excellent yields. The protocol is convenient for practical application. A plausible mechanism has been proposed for the reaction.
Selective Substitution of POCl3 with Organometallic Reagents: Synthesis of Phosphinates and Phosphonates
作者:Bram Verbelen、Wim Dehaen、Koen Binnemans
DOI:10.1055/s-0037-1609435
日期:2018.5
could be obtained by using a Grignard reagent whereas an organozinc reagent provided a phosphonate. Based on these results, one-pot synthetic methods for the preparation of phosphinates and phosphonatesusing commercially available starting materials were developed. Both methods allow the synthesis of a broad range of either phosphinate or phosphonate derivatives in a straightforward and general procedure
A novel base-promoted O-deprotonation/alkylation reaction of P(O)-OH compounds with alkyl halides has been developed. The protocol is practical, representing a simple way to produce a broad spectrum of functionalized phosphinates, phosphonates, and phosphates from basic starting materials with good to excellent yields. A plausible mechanism was proposed for this reaction. (C) 2014 Elsevier Ltd. All rights reserved.