[EN] PROCESSES FOR THE PREPARATION OF ORTHO-ALLYLATED HYDROXY ARYL COMPOUNDS<br/>[FR] PROCÉDÉS DE PRÉPARATION DE COMPOSÉS HYDROXY-ARYLE ORTHO-ALLYLÉS
申请人:UNIV MCMASTER
公开号:WO2021237371A1
公开(公告)日:2021-12-02
The present application describes process for preparing an ortho-allylated hydroxy aryl compounds such as compounds of Formula (I) by reacting an allylic alcohol with a hydroxy aryl compound in the presence of aluminum compound selected from alumina and aluminum alkoxides and in a non-protic solvent wherein at least one carbon atom ortho to the hydroxy group in the hydroxy aryl compound is unsubstituted. The present application also includes compounds of Formula (I).
Synthesis of the naturally occurring prenylated coumarins balsamiferone and cedrelopsin by domino reactions
作者:Rupesh E. Patre、Perunninakulath S. Parameswaran、Santosh G. Tilve
DOI:10.3998/ark.5550190.0012.905
日期:——
Regioselective one step synthesis of naturallyoccurring prenyl coumarinbalsamiferone is described using domino Wittig reaction, 3,3-sigmatropic rearrangements and deprenylation, while regioselective synthesis of cedrelopsin is described via domino Wittig reaction, prenylation and deprenylation..
Anet et al., Australian Journal of Scientific Research, Series A: Physical Sciences, 1949, vol. <A> 2, p. 608,614, 615
作者:Anet et al.
DOI:——
日期:——
PROCESSES FOR THE PREPARATION OF ORTHO-ALLYLATED HYDROXY ARYL COMPOUNDS
申请人:McMaster University
公开号:US20210380513A1
公开(公告)日:2021-12-09
The present application describes process for preparing an ortho-allylated hydroxy aryl compounds such as compounds of Formula (I) by reacting an allylic alcohol with a hydroxy aryl compound in the presence of aluminum compound selected from alumina and aluminum alkoxides and in a non-protic solvent wherein at least one carbon atom ortho to the hydroxy group in the hydroxy aryl compound is unsubstituted. The present application also includes compounds of Formula (I).
Prenylcoumarins in One or Two Steps by a Microwave-Promoted Tandem Claisen Rearrangement/Wittig Olefination/Cyclization Sequence
作者:Christiane Schultze、Bernd Schmidt
DOI:10.1021/acs.joc.8b00667
日期:2018.5.4
overcome by a two-step synthesis consisting of a microwave-promoted tandem allyl ether Claisen rearrangement/Wittigolefination and a subsequent olefin cross metathesis with 2-methyl-2-butene. The cross metathesis step proceeds with a high selectivity and yields exclusively the desired prenyl, rather than the alternative crotyl substituent. Several naturally occurring 8-prenylcoumarins that were previously