Tributylphosphine catalyzed addition of diphenylphosphine oxide to unsubstituted and substituted electron-deficient alkenes
作者:Alexey V. Salin、Anton V. Il'in、Rustem I. Faskhutdinov、Vladimir I. Galkin、Daut R. Islamov、Olga N. Kataeva
DOI:10.1016/j.tetlet.2018.03.040
日期:2018.4
The PBu3-catalyzed conjugate addition of diphenylphosphine oxide to unsubstituted and substituted electron-deficient alkenes is reported. β-Substituted α,β-unsaturated esters, trans-methyl crotonate and trans-methyl cinnamate, known for their reluctance to participate in phosphine-catalyzed transformations, also react well under the developed conditions. Mild reaction conditions, simple work-up and
Magnesium-Catalyzed Regioselective Hydrophosphinylation of Alkenes with Diarylphosphine Oxides
作者:Lei Zhang、Shaokun Bai、Lijiao Zheng
DOI:10.1021/acs.organomet.3c00247
日期:2023.8.28
regioselective hydrophosphinylation of alkenes with secondary phosphineoxides (SPOs) via anti-Markovnikov addition to access structurally diverse organophosphorus compounds is described. This transformation features perfect atom economy, good functional group tolerance, and divergent regioselectivity toward vinylarenes and α,β-unsaturatedcarbonyl derivatives. Mechanistic studies revealed that the active
描述了通过反马尔可夫尼科夫加成反应,在镁催化下,烯烃与二氧化膦 (SPO) 发生区域选择性氢膦酰化,从而获得结构多样的有机磷化合物。该转化具有完美的原子经济性、良好的官能团耐受性以及对乙烯基芳烃和α,β-不饱和羰基衍生物的不同区域选择性。机理研究表明,活性催化物质可能是原位生成的带有 Ph 2 PO -部分的 O 结合镁络合物。
Fluoride-mediated phosphination of alkenes and alkynes by silylphosphines
作者:Minoru Hayashi、Yutaka Matsuura、Yutaka Watanabe
DOI:10.1016/j.tetlet.2004.10.098
日期:2004.12
Regioselective phosphination of carbon-carbon unsaturated bonds by a fluoride-mediated reaction of silylphosphines is described. Alkenes and alkynes having a directing group, such as an aromatic or a carbonyl group, reacted to form a carbon-phosphorus bond under mild conditions. When an anhydrous fluoride source was applied in the presence of an electrophile, the corresponding three-component coupling product was obtained. (C) 2004 Elsevier Ltd. All rights reserved.