The hydrogenation reactions of diphenylcarbene 1, fluorenylidene 2, and dibenzocycloheptadienylidene 3 were investigated in solid H2 and D2 matrices and in H2‐ and D2‐doped argonmatrices at cryogenic temperatures. The reactivity of the carbenes towards H2 increases in the order 1<3<2. Whereas 1 is stable in solid H2, 2 and 3 react fast under the same conditions via quantum chemical tunneling. In D2
Reaction of Diphenyldiazomethane with Singlet Oxygen Studied by Time-Resolved IR Spectroscopy
作者:Joel Torres-Alacan、Wolfram Sander
DOI:10.1021/jo800955w
日期:2008.9.19
The mechanism of the reaction of diphenyldiazomethane 4a with singletoxygen has been investigated by nanosecond time-resolved UV-vis (LFP) and IR (step-scan) spectroscopy. The experiments were performed with fullerene (C60) as photosensitizer for the generation of (1)O2 in nonpolar solvents (toluene and CCl4). The UV-vis experiments allowed us to monitor the formation of benzophenone O-oxide 1a, while