作者:Jen-Lung Wang、Igor Likhotvorik、Matthew S. Platz
DOI:10.1021/ja983279g
日期:1999.3.1
Photolysis of methyl 2-diazo(2-naphthyl)acetate releases singlet 2-naphthyl(carbomethoxy)carbene. The singlet carbene relaxes to the lower energy triplet state within 350 ps−1 ns. Singlet to triplet carbene intersystem crossing is much faster than Wolff rearrangement to the corresponding ketene. The barrier to Wolff rearrangement of the spin-equilibrated carbene is 3.4 kcal/mol in hexafluorobenzene
2-重氮(2-萘基)乙酸甲酯的光解释放单线态 2-萘基(甲氧基)卡宾。单线态卡宾在 350 ps-1 ns 内弛豫到较低能量的三线态。单线态到三线态卡宾系统间的交叉比沃尔夫重排到相应的乙烯酮要快得多。在六氟苯中,自旋平衡的卡宾发生沃尔夫重排的障碍为 3.4 kcal/mol。在该系统中,烯酮由卡宾形成,并且在很大程度上不是由重氮化合物的激发态形成。