Chemistry of the Versatile (Hydroxymethyl)phosphinyl P(O)CH2OH Functional Group
摘要:
(Hydroxymethyl)phosphorus compounds are well-known and valuable compounds in general; however the use of (hydroxymethyl)phosphinates (RP)-P-1(O)(OR2)CH2OH in particular has been much more limited. The potential of this functionality has not yet been fully realized because the mild unmasking of the hydroxymethyl group was not available. The mild oxidative conversion of (RP)-P-1(O)(OR2)CH2OH into (RP)-P-1(O)(OR2)H using the Corey-Kim oxidation is described. Other reactions preserving the methylene carbon are also reported.
Mild Synthesis of Organophosphorus Compounds: Reaction of Phosphorus-Containing Carbenoids with Organoboranes
作者:Monika I. Antczak、Jean-Luc Montchamp
DOI:10.1021/ol800085u
日期:2008.3.1
Organoboranes react with phosphorus-containing carbenoids to produce a variety of functionalized organophosphorus compounds under mild conditions. In some cases, selective migration of one group attached to boron can be observed. Phosphonite-borane complexes are introduced as novel synthons for the synthesis of phosphinic esters.
Hydrophosphinylation of Unactivated Terminal Alkenes Catalyzed by Nickel Chloride
作者:Stéphanie Ortial、Henry C. Fisher、Jean-Luc Montchamp
DOI:10.1021/jo4008749
日期:2013.7.5
The room-temperature hydrophosphinylation of unactivated monosubstituted alkenes using phosphinates (ROP(O)H2) and catalytic NiCl2 in the presence of dppe is described. The method is competitive with prior palladium-catalyzed reactions and uses a much cheaper catalyst and simple conditions. The scope of the reaction is quite broad in terms of unactivated terminal olefins, proceeds at room temperature
Manganese-Catalyzed and Promoted Reactions of<i>H</i>-Phosphinate Esters
作者:Henry C. Fisher、Olivier Berger、Fabien Gelat、Jean-Luc Montchamp
DOI:10.1002/adsc.201301157
日期:2014.4.14
with alkenes and alkynes using catalytic manganese(II) acetate. Under stoichiometric conditions with manganese(III) acetate or with catalytic manganese(II) acetate+excess manganese(II) oxide various reactions like arylation or cyclization through radical oxidative arylation can take place. Whereas the chemistry of manganese is already well developed for the functionalization of H‐phosphonates, the present
Phosphorus-Carbon Bond Formation: Palladium-Catalyzed Cross-Coupling of<i>H</i>-Phosphinates and Other P(O)H-Containing Compounds
作者:Olivier Berger、Christelle Petit、Eric L. Deal、Jean-Luc Montchamp
DOI:10.1002/adsc.201300069
日期:2013.5.3
developed for the cross‐coupling of P(O)H compounds with Csp2X and related partners. Palladium catalysis using a ligand/additive combination, typically either xantphos/ethylene glycol or 1,1′‐bis(diphenylphosphino)ferrocene/1,2‐dimethoxyethane, with diisopropylethylamine as the base, proved to be generally useful for the synthesis of numerous PC containing compounds. Routinely, 2 mol% of catalyst are
P(═O)H to P–OH Tautomerism: A Theoretical and Experimental Study
作者:Benjamin G. Janesko、Henry C. Fisher、Mark J. Bridle、Jean-Luc Montchamp
DOI:10.1021/acs.joc.5b01618
日期:2015.10.16
are important functionalities in organophosphorus chemistry and display prototropic tautomerism. Quantifying the tautomerization rate is paramount to understanding these compounds’ tautomerization behavior, which may impact their reactivities in various reactions. We report a combined theoretical and experimentalstudy of the initial tautomerization rate of a range of phosphinylidene compounds. Initial
膦亚基化合物R 1 R 2 P(O)H在有机磷化学中具有重要的功能,并显示质子互变异构现象。量化互变异构率对于理解这些化合物的互变异构行为至关重要,这可能会影响它们在各种反应中的反应性。我们报告了一系列次膦亚基化合物的初始互变异构速率的理论和实验研究相结合。发现初始互变异构率降低的顺序为H 3 PO 2 > Ph 2 P(O)H>(PhO)2 P(O)H> PhP(O)(OAlk)H> AlkP(O)(OAlk)H ≈(AlkO)2P(O)H,其中“ Alk”表示烷基取代基。计算研究与实验验证的结合为各种磷化合物的反应性建立了一种定量方法,以及一种精确的预测工具。