Cationic cyclization of regular α-monoterpenols as a model for tri- and tetracyclic diterpene biosynthesis
作者:V.V Veselovsky、V.A Dragan、A.M Moiseenkov
DOI:10.1016/s0040-4039(00)88762-6
日期:1990.1
Low-temperature boron trifluoride etherate initiated cyclization of α-geraniol, α-nerol, and α-linalool leads to regioisomeric dimethylvinylcyclohexenes possessing a rare monoterpene carbon skeleton along with bicyclo[3.2.1]octyl fluoride. The cyclization mimics biosynthesis of tri- and tetracyclicditerpenes according to Wenkert.
作者:John L. Binder、Kenneth C. Eberly、George E. P. Smith
DOI:10.1002/pol.1959.1203813320
日期:1959.7
The cyclic C6 and C8 dimers of isoprene have been prepared by thermal dimerization and their physical and chemical properties obtained. The infrared spectra of these substances are also given and are used to confirm the structures deduced chemically.
Regiocontrolled and stereocontrolled carbon-carbon bond formation via linear dimerization of conjugated dienes catalyzed by nickel-aminophosphinite complexes
作者:Philippe Denis、Andre Jean、Jean Francois Croizy、Andre Mortreux、Francis Petit
DOI:10.1021/ja00159a086
日期:1990.1
Catalyse par le systeme Ni(COD) 2 -EPHOSNH, CODs cyclooctadiene-1,5, EPHOSNH=PPh 2 OCH(Ph)CH(Me)NHMe
催化 par le systeme Ni(COD) 2 -EPHOSNH, CODs cyclooctadiene-1,5, EPHOSNH=PPh 2 OCH(Ph)CH(Me)NHMe
Titankomplexe offenkettiger und cyclischer arsanliganden: synthese und katalytische wirkung (1)
The Ti(IV) complexes 1b, 2b, and 6 have been synthesized from new multi-electron ligands. 2b, after reduction with Et2AlCl, dimerizes isoprene mainly to 8c and trimerizes butadiene mainly to ttt-CDT. Ti(IV) compounds of the macrocyclic ligands 7a-c exhibit the same catalytic properties after reduction with Et2AlCl.