Condensation of 3,4-diethylpyrrole with 1,3-diformylindane in the presence of catalytic HBr afforded, following oxidation with FeCl3, the first example of a dicarbaporphyrin in moderate yield; this novel bridged annulene system retains a strong diamagnetic ring current in 1H NMR spectroscopy as well as a porphyrin-like UVâVIS spectrum.
3,4-二乙基吡咯与 1,3-二甲酰基林丹在催化 HBr 存在下缩合,然后用 FeCl3 氧化,得到中等产率的二碳
卟啉的第一个例子;这种新颖的桥联轮烯系统在 1H NMR 光谱以及类
卟啉 UV-VIS 光谱中保留了强大的抗磁环电流。