Hydrophosphination of α,β-unsaturated esters by primary phosphine-boranes; a useful entry to symmetrical and unsymmetrical phosphine-boranes
摘要:
The reactivity of primary phosphine-boranes RPH(2) . BH3 (R = Ph and Me) towards CH2=CHCO(2)Me and CH2=CHP(O)(OMe)(2) is discussed. Hydrophosphination is the major process. The presence of the free phosphine (0-20%) in the crude media indicates that a competitive hydroboration reaction also occurs. The P-H addition was found to be controllable to give, in reasonable yields. either the mono or the bis-adducts. All the adducts are stable and are fully characterized, The preparation of an unsymmetrical bis-adduct is also presented. (C) 1997 Published by Elsevier Science Ltd.
A bench-stable copper photocatalyst for the rapid hydrophosphination of activated and unactivated alkenes
作者:Steven G. Dannenberg、Rory Waterman
DOI:10.1039/d0cc06570f
日期:——
that have never before been reported with an air-stable catalyst or at ambient temperature. The commercial availability, ease of use, and broad substrate scope of compound 1 make hydrophosphination more available to syntheticchemists.
A Study of Two Highly Active, Air-Stable Iron(III)-μ-Oxo Precatalysts: Synthetic Scope of Hydrophosphination using Phenyl- and Diphenylphosphine
作者:Kimberley J. Gallagher、Maialen Espinal-Viguri、Mary F. Mahon、Ruth L. Webster
DOI:10.1002/adsc.201501179
日期:2016.7.28
The importance of phosphines in synthetic chemistry cannot be underestimated. Catalytic hydrophosphination offers an ideal method to prepare P−C bonds without the need for harsh reaction conditions or stoichiometric amounts of waste by‐product. We herein report our studies into two biocompatible iron(III) complexes in hydrophosphination chemistry using diphenylphosphine under mild and benign reaction
A Commercially Available Ruthenium Compound for Catalytic Hydrophosphination
作者:Michael P. Cibuzar、Steven G. Dannenberg、Rory Waterman
DOI:10.1002/ijch.201900070
日期:2020.3
available rutheniumcompound, bis(cyclopentadienylruthenium dicarbonyl) dimer ([CpRu(CO)2]2), was explored. Styrene derivatives or Michael acceptors react readily with either primary or secondary phosphines in the presence of 0.1 mol % of [CpRu(CO)2]2 under photolysis with an inexpensive and commercially available UV/A 9 W lamp. In comparison to related photoactivated hydrophosphination reactions with [CpFe(CO)2]2
Hydrophosphination of alkenes and alkynes with primary phosphines catalyzed by zirconium complexes bearing aminophenolato ligands
作者:Yu Zhang、Xinxin Wang、Yaorong Wang、Dan Yuan、Yingming Yao
DOI:10.1039/c8dt02122h
日期:——
activity and chemo-selectivity in catalyzing intermolecular hydrophosphination of C–C multiple bonds with primary phosphines under mild conditions. A broad range of alkenes and alkynes underwent a mono-addition reaction with phenylphosphine, which generated secondary phosphines in 39–99% yields and >7 : 1 selectivity (over double hydrophosphination).
Intermolecular Zirconium-Catalyzed Hydrophosphination of Alkenes and Dienes with Primary Phosphines
作者:Michael B. Ghebreab、Christine A. Bange、Rory Waterman
DOI:10.1021/ja503036z
日期:2014.7.2
Catalytic hydrophosphination of terminal alkenes and dienes with primary phosphines (RPH2; R = Cy, Ph) under mild conditions has been demonstrated using a zirconium complex, [kappa(5)-N,N,N,N,C-(Me3SiN-CH2CH2)(2)NCH2CH2NSiMe2CH]Zr (1). Exclusively anti-Markovnikov functionalized products were observed, and the catalysis is selective for either the secondary or tertiary phosphine (i.e., double hydrophosphination) products, depending on reaction conditions. The utility of the secondary phosphine products as substrates for further elaboration was demonstrated with a platinum-catalyzed asymmetric alkylation reaction.