Photoredox-catalyzed decarboxylative alkylation/cyclization of alkynylphosphine oxides: a metal- and oxidant-free method for accessing benzo[<i>b</i>]phosphole oxides
By photoredox-catalysis, alkylation/aryl cyclization of alkynylphosphine oxides towards benzo[b]phospholes has been realized under metal- and oxidant-free conditions at room temperature.
通过光氧化催化,在室温无金属和氧化剂条件下,实现了炔膦氧化物向苯并[b]膦的烷基化/芳基环化。
Catalyst- and Oxidant-Free Desulfonative C−P Couplings for the Synthesis of Phosphine Oxides and Phosphonates
towards phosphineoxides and phosphonates has been successfully developed through the desulfonative coupling of various sulfones with secondary phosphineoxides and phosphites. This protocol features simple experimental procedures under mild conditions (i. e., catalyst‐ and oxidant‐free, room temperature and open to air). By doing so, a variety of alkynyl, alkenyl and allyl phosphineoxides or phosphonates
Silver-Free Direct Synthesis of Alkynylphosphine Oxides via <i>sp</i>C–H/P(O)–H Dehydrogenative Coupling Catalyzed by Palladium
作者:Jian-Qiu Zhang、Tieqiao Chen、Ji-Shu Zhang、Li-Biao Han
DOI:10.1021/acs.orglett.7b02389
日期:2017.9.1
silver-free palladium-catalyzed dehydrogenative phosphorylation of terminal alkynes with hydrogen phosphine oxides has been developed. Both aromatic and aliphatic terminal alkynes including those bearingfunctionalgroups coupled readily with hydrogen phosphine oxides, producing the corresponding value-added alkynylphosphine oxides in good to excellent yields. This reaction could be easily conducted
Additive-free coupling of bromoalkynes with secondary phosphine oxides to generate alkynylphosphine oxides in acetic anhydride
作者:Hongjie Ruan、Ling-Guo Meng、Hailong Xu、Yuqing Liang、Lei Wang
DOI:10.1039/c9ob02750e
日期:——
A coupling of bromoalkynes with secondaryphosphineoxides was developed for the synthesis of alkynylphosphine oxides. This transformation was accomplished under additive-free conditions in acetic anhydride (Ac2O). The reaction could be carried out under mild conditions, and a wide range of secondaryphosphineoxides were obtained in good yields.
Silver-Mediated Selective Oxidative Cross-Coupling between C–H/P–H: A Strategy to Construct Alkynyl(diaryl)phosphine Oxide
作者:Tao Wang、Songtao Chen、Ailong Shao、Meng Gao、Yangfei Huang、Aiwen Lei
DOI:10.1021/ol503341t
日期:2015.1.2
A direct oxidative cross-coupling between terminal alkynes and secondary phosphine oxides was developed. This approach provides an efficient way to construct alkynyl di(phenyl) phosphine oxides from basic materials, and in this process, the silver salts act as a key promoter.