Electrooxidative cleavage of carbon-carbon linkages. 1. Preparation of acyclic oxoalkanoates from 2-hydroxy- and 2-acetoxy-1-cycloalkanones and cycloalkanone enol acetates
Synthesis of medium ring ethers. Part 2. Synthesis of the fully saturated carbon skeleton of Laurencia non-terpenoid ether metabolites containing seven-, eight- and nine-membered rings
作者:Robert W. Carling、J. Stephen Clark、Andrew B. Holmes
DOI:10.1039/p19920000083
日期:——
A general method for the construction of medium ring ethers is described in which a 2-substituted cycloalkanone was subjected to a Baeyer–Villiger ring expansion to the lactone, Tebbe methylenation of which afforded the enol ether which was subjected to a hydroboration–oxidation sequence to afford the 2,n-disubstituted oxacycle (n= ring size). Application of this procedure has led to efficient syntheses
TORII, SIGERU;INOKUCHI, TSUTOMU;OI, RYU, J. ORG. CHEM., 1982, 47, N 1, 47-52
作者:TORII, SIGERU、INOKUCHI, TSUTOMU、OI, RYU
DOI:——
日期:——
LIPHAGAL ENANTIOMERS AND THEIR DERIVATIVES AND PRECURSORS, AND ENANTIOSELECTIVE METHODS OF MAKING THE SAME
申请人:Stoltz Brian M.
公开号:US20130023676A1
公开(公告)日:2013-01-24
Enantioenriched compositions of liphagal and its derivatives and precursors include more than 50 mol % of a first enantiomer based on the total amount of a first and a second enantiomer. A method of making an enantioenriched composition includes catalytic enantioselective alkylation, ring expansion, and intramolecular aryne cyclization.