The controllable phosphorylations of thioesters were developed. When the reaction was catalyzed by a palladium catalyst, aryl or alkenyl phosphoryl compounds were generated through decarbonylative coupling, while the benzyl phosphoryl compounds were produced through deoxygenative coupling when the reaction was carried out in the presence of only a base.
carbon–heteroatom (C–P, C–O, C–S, and C–N) bonds via C–N cleavage of benzyl ammoniumsalts under transition-metal-free conditions was reported. The combination of t-BuOK and 18-crown-6 enabled a wide range of substituted benzyl ammoniumsalts to couple readily with different kinds of heteroatom nucleophiles, i.e. hydrogen phosphoryl compounds, alcohols, thiols, and amines. Good functional group tolerance was demonstrated
Ni-Catalyzed Enantioselective Benzylation of Secondary Phosphine Oxide
作者:Wen-Qiang Cai、Qi Wei、Qing-Wei Zhang
DOI:10.1021/acs.orglett.2c00209
日期:2022.2.11
A nickel-catalyzed benzylic substitution of secondaryphosphineoxide was described, affording the dialkylated P-stereogenic tertiary phosphineoxides with high to excellent enantioselectivities. The reaction was performed under mild conditions with commercially available benzyl chlorides and bench stable secondaryphosphineoxides, exhibiting broad functional group tolerance. It represented a practical
Ligand-Free Iron-Catalyzed Construction of C–P Bonds via Phosphorylation of Alcohols: Synthesis of Phosphine Oxides and Phosphine Compounds
作者:Liguang Gan、Changxu Ye、Tianshu Pi、Lingling Wang、Chunya Li、Long Liu、Tianzeng Huang、Tieqiao Chen、Li-Biao Han
DOI:10.1021/acs.joc.4c00439
日期:2024.5.17
bonds via the iron-catalyzed phosphorylation of alcohols under ligand-free conditions is disclosed. This strategy represents a straightforward process to prepare a series of phosphine oxides and phosphine compounds in good to excellent yields from the readily available alcohols and P–H compounds. A plausible mechanism is also proposed. We anticipate that this mode of transforming simple alcohols would
Second Generation Catalytic Enantioselective Nucleophilic Desymmetrization at Phosphorus (V): Improved Generality, Efficiency and Modularity
作者:Michele Formica、Branislav Ferko、Thomas Marsh、Timothy A. Davidson、Ken Yamazaki、Darren J. Dixon
DOI:10.1002/anie.202400673
日期:2024.4.24
two-phase strategy for the enantioselectivesynthesis of stereogenic at phosphorus (V) compounds. This protocol, consisting of a bifunctional iminophosphorane (BIMP) catalyzed nucleophilic desymmetrization of prochiral, bench stable P(V) precursors and subsequent enantiospecific substitution allows for divergent access to a range of C-, N-, O- and S- substituted P(V) compounds from a handful of enantioenriched
用于对映选择性合成立体源磷 (V) 化合物的第二代催化两相策略。该方案由双功能亚氨基正膦 (BIMP) 催化的前手性、工作台稳定的 P(V) 前体的亲核去对称化和随后的对映特异性取代组成,允许不同地获得一系列C -、 N -、 O - 和S - 取代的 P( V) 来自少数对映体富集中间体的化合物。