Cobalt(II) tetraphenylporphyrin-catalyzed isomerization of electronegative substituted quadricyclanes
作者:Sadao Miki、Toshinobu Ohno、Hideaki Iwasaki、Zen-ichi Yoshida
DOI:10.1016/s0040-4039(00)98671-4
日期:1985.1
Co(II)TPP1 - catalysed isomerization of a series of electronegative substituted quadricyclanes(1) to the correspondingnorbornadiene(2) was found to proceed via radicophilic attack of the metal to 1.
Competing cheletropic reactions of difluorocarbene with various 2-substituted norbornadienes
作者:Charles W. Jefford、Phan Thanh Huy
DOI:10.1016/s0040-4039(00)71464-x
日期:1980.1
Norbornadienes substituted at C2 with electron donating, conjugating, and withdrawing groups react with difluorocarbene to give a ratio of 1,2 to homo-1,4 adducts, which reflects a diminishing response of electrophilic character in the carbene.
DIETRICH-BUCHECKER C.; MARTINA D.; FRANCK-NEUMANN M., J. CHEM. RES. SYNOP. 1978, NO 2, 78-79
作者:DIETRICH-BUCHECKER C.、 MARTINA D.、 FRANCK-NEUMANN M.
DOI:——
日期:——
The Diels–Alder reactivity of (E)-3-phenylsulfonylprop-2-enenitrile, a cyanoacetylene equivalent
作者:Pamela J. Bradley、David H. Grayson
DOI:10.1039/b203391g
日期:——
(E)-3-Phenylsulfonylprop-2-enenitrile undergoes facile DielsâAlder reactions, moderate regioselectivity being observed with several unsymmetrical dienes. Danishefsky's diene and furfuryl alcohol react regioselectively. The cycloadducts formed with cyclopentadiene and with anthracene undergo base-catalysed elimination of benzenesulfinic acid to yield α,β-unsaturated nitriles.