Wang Jian, Sheridan Robert S
Department of Chemistry, Mail Stop 216, University of Nevada, Reno, Nevada 89557, USA.
Org Lett. 2007 Aug 2;9(16):3177-80. doi: 10.1021/ol071290s. Epub 2007 Jul 14.
Matrix-isolated 2-benzothienyl(trifluoromethyl)carbene was generated by irradiation of the corresponding diazirine, and characterized by IR and UV/vis spectroscopy, in situ trapping, and DFT modeling. Experiments and calculations indicate that the carbene is a ground-state singlet, in contrast to previously characterized aryl(trifluoromethyl)carbenes. The carbene could be interconverted photochemically with a ring-opened thioquinomethide and a highly strained cyclic allene.
通过照射相应的重氮化合物生成了基质隔离的2-苯并噻吩基（三氟甲基）卡宾，并通过红外光谱和紫外/可见光谱、原位捕获和密度泛函理论建模对其进行了表征。实验和计算表明，与先前表征的芳基（三氟甲基）卡宾不同，该卡宾是基态单线态。该卡宾可以通过光化学与开环硫代喹甲川和高度张力的环状丙二烯相互转化。
