TiCl<sub>4</sub>-mediated conjugate addition reactions of stannylallenes to α,β-unsaturated carbonyl compounds
作者:Jun-ichi Haruta、Koichi Nishi、Satoshi Matsuda、Yasumitsu Tamura、Yasuyuki Kita
DOI:10.1039/c39890001065
日期:——
Stannylallene reacted with α,β-unsaturatedcarbonylcompounds in the presence of TiCl4 to give the corresponding conjugateaddition products, β-prop-2-ynylic carbonylcompounds.
An effective and selective conjugate propargylation reaction of stannylallenes to .alpha.,.beta.-unsaturated carbonyl compounds and .alpha.-nitro olefins
作者:Junichi Haruta、Koichi Nishi、Satoshi Matsuda、Shuji Akai、Yasumitsu Tamura、Yasuyuki Kita
DOI:10.1021/jo00303a019
日期:1990.8
Intramolecular Pauson-Khand Reaction of 3-Alkynyl-1-alkyl- idenecycles: A Convenient Synthesis of [5.n.1.01,5] Tricyclic Compounds
An intramolecular Pauson-Khandreaction of various 3-alkynyl-1-alkylidenecyclic compounds was performed to give the corresponding [5.n.1.0 1 , 5 ] tricyclic compounds (n = 2-4). A facile construction of the core structure in cedrene terpenoids was also investigated in detail and formal total synthesis of α- and β-cedrenes was accomplished.