Pd-Catalyzed P–C Cross-Coupling Reactions for Versatile Triarylphosphine Synthesis
摘要:
Practical and versatile syntheses of tertiary phosphine derivatives have been achieved by palladium-catalyzed deformylative P-C cross-coupling reactions of hydroxymethylphosphine derivatives. Sequential couplings of orthogonally protected precursors provide a simple and practical route toward a variety of tertiary phosphine derivatives having aryl substituents in any combination.
A synthesis of highly substituted alkenylphosphines by Lewis acid-mediated silylphosphination of substituted propiolates is described. The addition proceeded smoothly to give the corresponding acrylates, where the phosphino group attached at the β and the silyl group located at the α position of the resulting acrylate, in exclusively syn-stereochemistry.
Fluoride-catalyzed three-component coupling reaction of a silylphosphine, activated alkenes and aldehydes
作者:Minoru Hayashi、Yutaka Matsuura、Yutaka Watanabe
DOI:10.1016/j.tetlet.2005.05.128
日期:2005.8
A novel CsF-catalyzed three-componentcouplingreaction of a silylphosphine, activatedalkenes and aldehydes is described. Multi-functional phosphines were obtained by forming both carbon–phosphorus and carbon–carbon bonds in good yields under mild conditions.
Conjugate phosphination of cyclic and acyclic acceptors using Rh(I)–phosphine or Rh(I)–carbene complexes. Probing the mechanism with chirality at the silicon atom or the phosphorus atom of the Si–P reagent
作者:Verena T. Trepohl、Roland Fröhlich、Martin Oestreich
DOI:10.1016/j.tet.2009.04.038
日期:2009.8
The Rh(I)-catalyzed conjugate phosphinyl transfer from an Si–P reagent to an electron-deficient acceptor requires individual protocols for cyclic and acyclic α,β-unsaturatedcarbonyls and carboxyls. While 1,4-addition to cyclic acceptors is catalyzed by a Rh(I)–phosphine complex, a Rh(I)–carbene complex is needed to promote conjugate phosphination of acyclic acceptors. General procedures for both systems
Regio- and Stereoselective Synthesis of Alkenylphosphines: A Rhodium-Catalyzed Hydrophosphination of Alkynes Using a Silylphosphine
作者:Minoru Hayashi、Yutaka Matsuura、Yutaka Watanabe
DOI:10.1021/jo061739f
日期:2006.11.1
A novel rhodium-catalyzed hydrophosphination of alkynes using a silylphosphine as a phosphino group source is described. A variety of alkynes, both terminal and internal ones with aryl, alkyl, and carboxyl groups, gave the corresponding alkenylphosphines in a highly regioselective and syn-selective manner. Alkenes with an electron-withdrawing group also gave the corresponding adducts in good yields
A Dynamic Kinetic C–P Cross–Coupling for the Asymmetric Synthesis of Axially Chiral P,N Ligands
作者:Pedro Ramírez-López、Abel Ros、Beatriz Estepa、Rosario Fernández、Béla Fiser、Enrique Gómez-Bengoa、José M. Lassaletta
DOI:10.1021/acscatal.6b00784
日期:2016.6.3
sphines has been used for the synthesis of several families of enantiomerically enriched heterobiaryl phosphines including QUINAP, PINAP, and QUINAZOLINAP analogues, which can be performed with good yields and enantioselectivities using JOSIPHOS-type bidentate phosphines. The strategy relies on two key assumptions: (I) The N atom of the heterocycle is a better ligand than triflate, and upon oxidative