Synthesis ofZ-Alkenyl Phosphorus Compounds through Hydroalumination and Carbocupration of Alkynyl Precursors
摘要:
The stereocontrolled synthesis of Z-alkenylphosphine-borane complexes is easily accomplished via the hydroalumination or carbocupration of alkynyl precursors. Z/E ratios are generally higher than 95/5. These reactions are stereocomplementary to our olefination approach.
Metallo-phosphorylation of alkynes: reaction of alkynes with Cp2Zr(1-butene)(PR3) and chlorophosphateElectronic supplementary information (ESI) available: experimental procedures and NMR data. See http://www.rsc.org/suppdata/cc/b3/b308595c/
作者:Chunbo Lai、Chanjuan Xi、Chao Chen、Mingming Ma、Xiaoyin Hong
DOI:10.1039/b308595c
日期:——
Reaction of alkynes with Cp2ZrBu2 and chlorophosphate in the presence PR3 to form zircono-alkenylphosphonates, which can be converted into various β-functionalized alkenylphosphonates.
Stereoselective synthesis of homochiral (E)-vinyl phosphonates derived from (-)-ephedrine
作者:Thomas Taapken、Siegfried Blechert
DOI:10.1016/00404-0399(50)1351-h
日期:1995.9
A new synthesis of homochiral vinyl phosphonates starting from 1-alkynes is described., The title compounds were obtained in good yields by the reaction of chiral 2-chloro-1,3,2-oxa2aphospholidin-2-one (1) with the “ate”-complexes of vinyl alanes., The latter were prepared by zirconocene dichloride catalyzed hydroalumination of 1-alkynes with diisobutyl aluminum hydride (DIBAH).
the cycloaddition reaction of phosphonyl nitrileoxides and the formation of an unexpected 2:1 cycloaddition product. It provides a direct route to triphosphonyl-substituted dihydroisoxazolyl dihydroisoxazoles and diphosphonyl-substituted dihydroisoxazolyl dihydroisoxazoles with excellent levels of regiocontrol product. Density functional theory studies of the reactions between nitrileoxides and acrylonitrile
Synthesis of (<i>E</i>)- and (<i>Z</i>)- Alkenylphosphonates Using Vinylboronates
作者:George W. Kabalka、Sankar K. Guchhait
DOI:10.1021/ol027515a
日期:2003.3.1
(E)- and (Z)-alkenylphosphonates have been prepared stereospecifically via the reaction of vinylboronate esters with triethyl phosphite in the presence of palladium acetate.