The heat of reaction and reaction volume for formation of ethers from several diazo compounds with two phenyl groups in methanol were determined by the transient grating and photoacoustic methods. It was found that the reaction volume significantly contributes to the photothermal signal and that the reaction volume is sensitive to the molecular structure of the diphenyl groups. The reaction volume is
Photoinduced zirconocene catalysis was utilized to achieve the reductivecoupling of ethers with remarkable activity and cross-selectivity. Mechanistic investigation revealed that photoexcitation of low-valent zirconocene facilitates the scission of benzylic C(sp3)−O bonds, resulting in benzylic radicals that recombine with Zr center. Subsequent carbomagnesiation generates benzylic Grignard reagents
Contrasting photosolvolytic reactivities of 9-fluorenol vs. 5-suberenol derivatives. Enhanced rate of formation of cyclically conjugated four .pi. carbocations in the excited state
作者:Peter Wan、Erik Krogh
DOI:10.1021/ja00195a048
日期:1989.6
Chemistry and kinetics of aryl carbenes in methanol at low temperatures
作者:Bradford B. Wright、Matthew S. Platz
DOI:10.1021/ja00327a018
日期:1984.7
Carbene cation radicals: the kinetics of their formation from diazoalkane cation radicals and their reactions