A Convenient (E)-Stereoselective Synthesis of Alkenylphosphonates
摘要:
Diethyl (E)-alkenylphosphonates have been prepared stereoselectively by dehydration of the corresponding beta-hydroxyphosphonates using DCC/CuCl2 in refluxing toluene. Starting beta-hydroxyphosphonates were obtained in high yield from diethyl methylphosphonate.
Stereoselective synthesis of vinylphosphonates and phosphine oxides via silver-catalyzed phosphorylation of styrenes
作者:Qingwen Gui、Liang Hu、Xiang Chen、Jidan Liu、Ze Tan
DOI:10.1039/c5cc04826e
日期:——
An efficient and stereoselectivesynthesis of vinylphosphonates and phosphine oxides was developed starting from styrenes using AgNO3 as the catalyst and K2S2O8 as the oxidant. Various vinyl-phosphonates and phosphine oxides were synthesized in good yields with excellent regioselectivity.
从苯乙烯开始,使用AgNO 3作为催化剂,K 2 S 2 O 8作为氧化剂,开发了一种有效的立体选择性合成乙烯基膦酸酯和氧化膦的方法。以良好的产率和优异的区域选择性合成了各种乙烯基膦酸酯和氧化膦。
A Stereoselective Synthetic Route to (<i>E</i>)-2-Arylvinylphosphonates
作者:Ping Zhong、Xian Huang、Zhi-Xing Xiong
DOI:10.1055/s-1999-2727
日期:1999.6
Terminal alkynes 1 react with Cp2Zr(H)Cl (Cp = η5-C5C5) to give organozirconium(IV) complexes 2, which are trapped with dialkyl chlorophosphates to afford (E)-arylvinylphosphonates 3.
Cu(<scp>i</scp>)/Fe(<scp>iii</scp>)-Catalyzed C–P cross-coupling of styrenes with H-phosphine oxides: a facile and selective synthesis of alkenylphosphine oxides and β-ketophosphonates
作者:Jian Gu、Chun Cai
DOI:10.1039/c7ob00505a
日期:——
Cu(I)/Fe(III)-Catalyzed phosphorylation and oxyphosphorylation of styrenes with H-phosphonates which can be controlled by varying the reaction temperature are developed. This study offers a new and expedient strategy for the synthesis of useful alkenylphosphine oxides and β-ketophosphonates in satisfactory yields. Moreover, the transformation is proposed to proceed via a radical process and exhibits
Silver-catalyzed synthesis of 2-arylvinylphosphonates by cross-coupling of β-nitrostyrenes with H-phosphites
作者:Jin-Wei Yuan、Liang-Ru Yang、Pu Mao、Ling-Bo Qu
DOI:10.1039/c6ra19002b
日期:——
An efficient protocol for stereoselective synthesis of vinylphosphonates has been developed via AgNO3-catalyzed cross-coupling of β-nitrostyrenes with dialkyl H-phosphites under mild conditions.