Palladium-Catalyzed Carbene Insertion and Trapping with Carbon Nucleophiles
摘要:
Palladium catalysts are shown to catalyze the three-component coupling of vinyl halides, trimethylsilyldiazomethane, and stabilized carbon nucleophiles. The reaction is believed to proceed through a palladium-carbene intermediate LX(R)Pd=CHSiMe3 that undergoes migration of the vinyl substituent to the electrophilic carbene center to generate an eta(3)-allylpalladium intermediate. The allylpalladium intermediate is attacked by the carbon nucleophile to generate a vinylsilane product.
Palladium-Catalyzed Carbene Insertion and Trapping with Carbon Nucleophiles
摘要:
Palladium catalysts are shown to catalyze the three-component coupling of vinyl halides, trimethylsilyldiazomethane, and stabilized carbon nucleophiles. The reaction is believed to proceed through a palladium-carbene intermediate LX(R)Pd=CHSiMe3 that undergoes migration of the vinyl substituent to the electrophilic carbene center to generate an eta(3)-allylpalladium intermediate. The allylpalladium intermediate is attacked by the carbon nucleophile to generate a vinylsilane product.
Palladium-Catalyzed Carbene Insertion and Trapping with Carbon Nucleophiles
作者:Sean K. J. Devine、David L. Van Vranken
DOI:10.1021/ol800431w
日期:2008.5.1
Palladium catalysts are shown to catalyze the three-component coupling of vinyl halides, trimethylsilyldiazomethane, and stabilized carbon nucleophiles. The reaction is believed to proceed through a palladium-carbene intermediate LX(R)Pd=CHSiMe3 that undergoes migration of the vinyl substituent to the electrophilic carbene center to generate an eta(3)-allylpalladium intermediate. The allylpalladium intermediate is attacked by the carbon nucleophile to generate a vinylsilane product.