Evidence of Hydrogen Migration in an Alkylphenyldiazirine Excited State
摘要:
Ultrafast photolysis (350 nm) of alkylphenyldiazirines promotes the diazirine to the Si excited state. Solvent and substituent effects on the excited state lifetimes indicate that the S-1 state is highly polarized and undergoes a [1,2]-H shift in concert with nitrogen extrusion in cyclohexane.
Microwave-Assisted, Pd(0)-Catalyzed Cross-Coupling of Diazirines with Aryl Halides
作者:Xia Zhao、Guojiao Wu、Chong Yan、Kui Lu、Hui Li、Yan Zhang、Jianbo Wang
DOI:10.1021/ol102434v
日期:2010.12.3
Pd(0)-catalyzed cross-coupling reactions of diazirines with aryl halides under microwave heating conditions afford a series of substituted olefins. A reactionmechanism involving the migratory insertion of the Pdcarbene intermediate is proposed.
Metal-free oxidative cross-coupling of diazirines with arylboronic acids
作者:Guojiao Wu、Xia Zhao、Wenzhi Ji、Yan Zhang、Jianbo Wang
DOI:10.1039/c5cc08855k
日期:——
We report herein a metal-free cross-coupling of diazirines with arylboronic acids under oxidative conditions. The reaction affords a series of substituted olefins. It is proposed that the interaction between nitrogen...