An efficient method for the direct allylation of alkylhalides catalyzed by simple cobalt(II) bromide has been developed. This reaction, using a variety of substituted allylicacetates or carbonates, provides the linear product as the major product. It displays broad substrate scope and good functional group tolerance.
The oxidation of tertiary cyclopropyl silyl ethers with hypervalent lambda(n)-iodanes caused fragmentation which produced alkenoic acids or esters. (C) 1998 Elsevier Science Ltd. All rights reserved.
OCHIAI, H.;TAMARU, Y.;TSUBAKI, K., J. ORG. CHEM., 52,(1987) N 19, 4418-4420