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Zur “cis-präferenz” bei der addition von butenyl-metallverbindung an ketone und aldehyde

Authors
Journal
Journal of Organometallic Chemistry
0022-328X
Publisher
Elsevier
Publication Date
Volume
195
Issue
2
Identifiers
DOI: 10.1016/s0022-328x(00)89998-2

Abstract

Abstract Esters of 1-butenyl-3-boronic acid add to aldehydes forming 2-butenyl-1-carbinols, the E/Z-ratio of which varies between 3 1 and 1 2 depending on the steric requirements of the ester component. The steric bulk of the groups coordinating the metal ion is discussed as a potential cause of the “ cis-preference” observed on addition of butenylmetal derivatives to ketones.

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