The label incorporation and Z → E isomerization in the reaction of 3-azidomethylenedihydro-(3H)-furan-2-one with Na15NN2 in 1:1 water–acetone were measured as a probe for internal clockwise vs anticlockwise rotation in the intermediate carbanion.
测量了3-
叠氮基亚甲基二氢-(3H)-
呋喃-2-酮与Na 15 NN 2在1:1
水-
丙酮中的反应中的标记掺入和Z → E异构化,以此作为探针内部顺时针旋转与逆时针旋转的探针。中间碳负离子。