Preparation of Organoaluminum Reagents from Propargylic Bromides and Aluminum Activated by PbCl2 and Their Regio- and Diastereoselective Addition to Carbonyl Derivatives
作者:Li-Na Guo、Hongjun Gao、Peter Mayer、Paul Knochel
DOI:10.1002/chem.201000523
日期:2010.8.23
propargylic and allenic aluminum reagents have been easily prepared by a direct insertion of aluminum into propargylic bromides in the presence of PbCl2 (1 mol %). These organoaluminum reagents react with carbonyl compounds to afford the corresponding allenic alcohols or homopropargylic alcohols in good to excellent yields with high regio‐ and diastereoselectivity.
Silanes in organic syuthesis. 11. Regiocontrolled synthesis of α-hydroxymethylated (trimethylsilyl)allenes
作者:Rhys G. Daniels、Leo A. Paquette
DOI:10.1016/s0040-4039(01)90382-x
日期:1981.1
The organometallic produced by reaction of trimethylsilylpropargyl bromide with aluminum amalgam in anhydrous tetrahydrofuran condenses readily with aldehydes and ketones to give allenic alcohols resulting from coupling α to the trimethylsilyl substituent.
The cyclization of trimethylsilyl-substituted .alpha.-allenic alcohols to 3-(trimethylsilyl)-2,5-dihydrofurans and their facile autoxidation to 3-(trimethylsilyl)furans or 4-(trimethylsilyl)-2(5H)-furanones
作者:Sham S. Nikam、Kai Hsuan Chu、Kung K. Wang
DOI:10.1021/jo00355a034
日期:1986.3
Regioselective synthesis of trimethylsilyl-substituted .alpha.-allenic alcohols via propargylic organoboranes
作者:Kung K. Wang、Sham S. Nikam、Chihmei D. Ho
DOI:10.1021/jo00174a048
日期:1983.12
DANIELS R. G.; PAQUETTE L. A., TETRAHEDRON LETT., 1981, NO 17, 1579-1582