Pd-Catalyzed Cross-Coupling of Terminal Alkynes with Chromium(0) Fischer Carbene Complexes
作者:Kang Wang、Fengjin Wu、Yan Zhang、Jianbo Wang
DOI:10.1021/acs.orglett.7b01096
日期:2017.6.2
Alkyl chromium(0) carbenecomplexes typically undergo cycloadditions with alkynes to afford carbo- or heterocyclic compounds. In the presence of Pd catalyst, it is demonstrated that a traditional cycloaddition pathway is completely altered: instead of cycloaddition, oxidative cross-coupling reaction of alkyl chromium(0) carbenecomplexes with terminal alkynes occurs. The coupling reaction exhibits
Triethylborane Induced Selective 1,4-Reduction of α,β-Unsaturated Carbonyl Compounds with Triphenyltin Hydride or Tributyltin Hydride
作者:Kyoko Nozaki、Koichiro Oshima、Kiitiro Utimoto
DOI:10.1246/bcsj.64.2585
日期:1991.8
Reduction of α,β-unsaturated ketones and esters with triphenyltin hydride or tributyltin hydride in the presence of triethylborane has been studied. Whereas the reaction of α,β-unsaturated ketones (R1CH=CHCOR2) with triphenyltin hydride provided the corresponding saturated ketones (R1CH2CH2COR2), treatment of α,β-unsaturated ester (PhCH=CHCOOMe or CH3CH=CHCOO–n-C6H13) afforded an adduct (PhCH2CH(SnPh3)COOMe