were obtained in all cases, and a diketone possessing the phenanthridone nucleus was also obtained from the carbazole. The products were identified from 1H and 13C n.m.r. spectral comparisons, and in some cases from 13C–1H coupling constants observed in the 13C spectra.
4-甲基-1,2,3,4-四氢环戊[ b ]
吲哚,5-甲基-
1,2,3,4-四氢咔唑和5-甲基-5,6,7,8,9,10-六氢
环庚烷[ b ]
吲哚在
水溶剂中用
乙炔二
羧酸二甲酯处理。在所有情况下均获得了衍生自2,3-二氢
吲哚体系的内酯,并且还从
咔唑获得了具有
菲蒽酮核的二酮。产物是通过1 H和13 C nmr光谱比较确定的,在某些情况下是从13 C光谱中观察到的13 C– 1 H耦合常数确定的。