Stereo/regio-controlled cyclization of polychlorohex-5-enoic acids into substituted cyclobutanes
作者:A. R. Mikaelyan
DOI:10.1134/s1070428010110084
日期:2010.11
A new method of synthesis was developed for functionally substituted cyclobutanecarboxylic acids based on an intramolecular cyclization of derivatives of the 2,2,4,6,6-pentachloro-3,3-dimethylhex-5-enoic acid in the presence of the copper(I) amine complexes. The cyclization proceeds both regiospecifically and stereoselectively, and the stereoisomeric composition of the products depends on the capability of the functional group in the initial polychloroalkenoic acid to coordinate to the transition metal ion. A reaction mechanism is suggested explaining the region/stereo-controlled course of the cyclization process.
Unexpected stereospecific intramolecular cyclization of 3,3-dimethyl-2,2,4,6,6-pentachloro-5-hexenyl chloride into a cyclobutane derivative
作者:S. S. Terzyan、A. R. Mikaelyan、Sh. O. Badanyan
DOI:10.1007/bf02873837
日期:1998.7
Badanyan; Stepanyan; Mikaelyan, Russian Journal of Organic Chemistry, 1997, vol. 33, # 1, p. 34 - 41