Syntheses of variously substituted allenediynes where the allene moiety is at the terminal or internal position are described. Their cobalt(I)-mediated [2+2+2] cycloaddition reactions led to the corresponding eta(4)-complexed tricyclic compounds; the regioselectivity of these cyclizations depending on the substitution and the position of the allene is discussed. (C) 1998 Elsevier Science Ltd. Ali rights reserved.
ARSENIYADIS, S.;GORE, J., TETRAHEDRON LETT., 1983, 24, N 37, 3997-4000
作者:ARSENIYADIS, S.、GORE, J.
DOI:——
日期:——
APPARU, M.;CRANDALL, J. K., J. ORG. CHEM., 1984, 49, N 12, 2125-2130