Au(I)-Catalyzed Cyclization of<i>tert</i>-Butyl Carbonates Derived from Homopropargyl Alcohols: A Catalytic Alternative to Cyclic Enol Carbonates
作者:Seunghoon Shin、Ji-Eun Kang
DOI:10.1055/s-2006-933110
日期:——
Au(I)-complexes catalyze cyclization of tert-butyl carbonates derived from a variety of homopropargyl alcohols. This procedure offers a catalytic alternative to stoichiometric Lewis acids for the preparation of a range of enol carbonates.
Rhodium catalyzed direct coupling of αβ-unsaturated ketone, aldehyde, and trialkylsilane: An easy access to regio-defined aldol derivatives
作者:Isamu Matsuda、Koji Takahashi、Susumu Sato
DOI:10.1016/s0040-4039(00)98063-8
日期:1990.1
Regio-defined aldol type compounds are successfully formed by a one-pot reaction of α, β-unsaturated ketones, aldehydes, and Et2MeSiH with the aid of a catalytic amount of Rh4(CO)12 or Rh4(CO)12/MePh2P under almost neutral conditions.
Aldol- and Mannich-Type Reactions via in Situ Olefin Migration in Ionic Liquid
作者:Xiao-Fan Yang、Mingwen Wang、Rajender S. Varma、Chao-Jun Li
DOI:10.1021/ol0273102
日期:2003.3.1
[GRAPHICS]An aldol-type and a Mannich-type reaction via the cross-coupling of aldehydes and imines with allylic alcohols catalyzed by RuCl2(PPh3)(3) was developed with ionic liquid as the solvent. The solvent/caltalyst system could be reused for at least five times with no loss of reactivity.
Synthesis of Nonracemic β-Hydroxy Ketones and Carbonate Derivatives from Homopropargylic Alcohols through Iodolactonization
作者:James A. Marshall、Mathew M. Yanik
DOI:10.1021/jo990439d
日期:1999.5.1
Synthesis of β-Hydroxy Ketones and Vinylsilanes from Homopropargylic Alcohols by Intramolecular Hydrosilation
作者:James A. Marshall、Mathew M. Yanik
DOI:10.1021/ol0061182
日期:2000.7.1
nonracemic homopropargylic alcohols affords the corresponding five-membered cyclic siloxanes regiospecifically. Oxidation or alkylmetal addition converts these intermediates into beta-hydroxy ketones or vinylsilanes under mild conditions.