Photoredox-catalyzed decarboxylative alkylation/cyclization of alkynylphosphine oxides: a metal- and oxidant-free method for accessing benzo[b]phosphole oxides
Visible-Light-Induced Oxidative C–H Functionalization of Unreactive Cycloalkanes, Alcohols, and Ethers with Alkynylphosphine Oxides into Benzo[<i>b</i>]phosphole Oxides under Photocatalyst-, Metal-, and Base-Free Conditions
作者:Baffa Haruna、Weitu Hong、Warsame Ibrahim Mohamed、Jiami Guo、Liyi Ye、Yingwu Yin、Yuxing Gao、Song Tu
DOI:10.1021/acs.joc.1c00841
日期:2021.9.17
We developed the radical cyclization/addition of alkynylphosphine oxides with easily available cycloalkanes, alcohols, and ethers using a visible-light and environmentally friendly synthetic strategy in the absence of photocatalyst at room temperature. This mild and metal- and base-free reaction provided a structurally varied set of significant benzo[b]phosphole oxides through sequential C–H functionalization
我们在室温下,在没有光催化剂的情况下,使用可见光和环境友好的合成策略,开发了炔基氧化膦与容易获得的环烷烃、醇和醚的自由基环化/加成。这种温和且无金属和碱的反应通过以原子经济的方式连续 C-H 官能化提供了一组结构变化的重要苯并[ b ]磷氧化物。
TBAI-catalyzed oxidative C–H functionalization: a new route to benzo[b]phosphole oxides
TBAI-catalyzed radical addition/cyclization of diaryl(arylethynyl)phosphine oxides with toluene derivatives has been developed, affording a general, one step approach to structurally sophisticated benzo[b]phosphole oxides via sequential C-H...
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.
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。
Azobisisobutyronitrile-Initiated Oxidative C–H Functionalization of Simple Alcohols with Diaryl(arylethynyl)phosphine Oxides: A Metal-Free Approach toward Hydroxymethyl Benzo[<i>b</i>]phosphole Oxides and 6<i>H</i>-Indeno[2,1-<i>b</i>]phosphindole 5-Oxide Derivatives
作者:Jiami Guo、Chenlu Mao、Bin Deng、Liyi Ye、Yingwu Yin、Yuxing Gao、Song Tu
DOI:10.1021/acs.joc.0c00118
日期:2020.5.15
described with azobisisobutyronitrile as a radical initiator, affording an efficient and one-pot procedure to access a new class of hydroxymethyl benzo[b]phosphole oxides and 6H-indeno[2,1-b]phosphindole 5-oxides for potential application in organic materials via sequential C(sp3)-H/C(sp2)-H functionalization. The method employs easily accessible starting materials and is endowed with high regioselectivity