An iron‐catalyzed chemo‐ and diastereoselective reduction of α,β‐unsaturated ketones into the corresponding saturated ketones in mild reaction conditions is reported herein. DFT calculations and experimental work underline that transfer hydride reduction is a more facile process than hydrogenation, unveiling the fundamental role of the base.
[EN] PROCESS FOR THE PREPARATION OF BETA-SANTALOL AND DERIVATIVES THEREOF<br/>[FR] PROCÉDÉ D'ÉLABORATION DE BÊTA-SANTALOL ET DÉRIVÉS CORRESPONDANTS
申请人:FIRMENICH & CIE
公开号:WO2009141781A1
公开(公告)日:2009-11-26
The present invention concerns a process for the preparation of a compound of formula (I) wherein R represents a Me or Et group, as well as said compound in the form of any one of its stereoisomers or mixture thereof. The invention concerns also the use of compound (I) for the synthesis of β-santalol or of derivatives thereof.
Remote C−H Activation of Phenyl-Substituted Alkenes by BH<sub>3</sub>·THF: Mechanism and Applications
作者:Jesús A. Varela、Diego Peña、Bernd Goldfuss、Kurt Polborn、Paul Knochel
DOI:10.1021/ol016215a
日期:2001.7.1
and, in particular, bicyclic alkenes with BH(3).THF at 50 degrees C provides, via a highlystereoselective 1,2-rearrangement and a remoteC-Hactivation, a diol in which the relative stereochemistry of three centers has been controlled. A mechanistic study provides general rules for remoteC-Hactivation and leads to new synthetic applications.