Regio‐ and Diastereoselective Rhodium‐Catalyzed Allylic Substitution with Unstabilized Benzyl Nucleophiles
作者:Debasis Pal、Timothy B. Wright、Ryan O'Connor、P. Andrew Evans
DOI:10.1002/anie.202008071
日期:2021.2.8
rhodium‐catalyzed allylic substitution of challenging alkyl‐substituted secondary allylic carbonates with benzylzinc reagents, which are prepared from widely available benzyl halides. This process utilizes rhodium(III) chloride as a commercially available, high‐oxidation state and bench‐stable pre‐catalyst to provide a rare example of a regio‐ and diastereoselective allylic substitution in the absence of an
P-menthan-3-ol alkylated derivatives and their use as refreshing agents
申请人:Joulain Daniel
公开号:US20090163733A1
公开(公告)日:2009-06-25
The invention concerns a 3-alkylated crystallized (1R,4S)-p-menthan-(3)-ol derivative, of formula A or B, wherein: either when R<2> represents hydrogen or a methyl radical, R<1> represents a —(CH2)n-OH where n can be 1, 2 and 3, or when R<2> represents a hydroxy radical, R<1> represents a methyl radical or a —(CH2)n-OH group where n can be 1, 2 and 3. The invention also concerns methods for preparing same, and perfume, cosmetic or food compositions containing said derivative.