Et<sub>2</sub>Zn-Mediated Rearrangement of Bromohydrins
作者:Lezhen Li、Peijie Cai、Qingxiang Guo、Song Xue
DOI:10.1021/jo800231s
日期:2008.5.1
and highly efficient method for the rearrangement of bromohydrins mediated by Et2Zn to synthesize carbonylcompounds was described. Various β-bromo alcohols were treated with 0.6 equiv of Et2Zn to form a zinc complex in CH2Cl2 at room temperature for 2 h, followed by 1,2-migration to give the corresponding carbonylcompounds. This remarkable and clean rearrangement is general for acyclic and cyclic bromohydrins
Iron-Catalyzed Alkenylation of Grignard Reagents by Enol Phosphates
作者:Gérard Cahiez、Olivier Gager、Vanessa Habiak
DOI:10.1055/s-2008-1067194
日期:2008.8
Stereoselective preparation of trisubstituted olefins can be easily performed from an Z/E-mixture of enol phosphates by reacting only the E-isomer with a Grignardreagent in the presence of Fe(acac) 3 . This procedure combines a kinetic differentiation and a stereoselective reaction. The coupling is very chemoselective in the presence of an alkyl chloride, an ester, a ketone or a nitrile.
Synthesis of biological markers in fossil fuels. 2. Synthesis and carbon-13 NMR studies of substituted indans and tetralins
作者:Maciej Adamczyk、David S. Watt、Daniel A. Netzel
DOI:10.1021/jo00196a024
日期:1984.11
Palladium-catalyzed cross coupling of Grignard reagents with in situ-derived enol phosphates
作者:Joseph A. Miller
DOI:10.1016/s0040-4039(02)01600-3
日期:2002.9
A useful, one-pot protocol has been developed for the conversion of enolizable ketones to alkylated or arylated olefins by Pd-catalyzed cross coupling of in situ-generated enol phosphate intermediates with Grignard reagents. (C) 2002 Elsevier Science Ltd. All rights reserved.
ADAMCZYK, M.;WATT, D. S.;NETZEL, D. A., J. ORG. CHEM., 1984, 49, N 22, 4226-4237