JOHNSON, P. R.;WHITE, J. D., J. ORG. CHEM., 1984, 49, N 23, 4424-4429
作者:JOHNSON, P. R.、WHITE, J. D.
DOI:——
日期:——
The Chromium Reformatsky Reaction: Acces to Adjacent Quarternary Centers
作者:Ludger Wessjohann、Harry Wild
DOI:10.1055/s-1997-1219
日期:1997.5
α-Bromo ketones, -esters and -nitriles react with chromium dichloride and ketones in a Barbier-type reaction to yield the kinetic crossed aldol products with one or two new quarternary centers. The reaction does not require special activation of the reagent, proceeds at room temperature and is suitable for microscale preparations. Crotonates react highly regioselective to yield α-products. The influence of solvents is discussed.