1,8-Diphenyl-1,8-bis(diazo)-octa-4-ene-2,6-diyne was prepared and photolyzed to give 1-phenyl-1,3-butadiyne in high yield. Ethynylphenylcarbene and β-phenylethynylcarbene generated by photolysis in MTHF at 6 K are in equilibrium in which the latter predominates at 90 K.
制备1,8
-二苯基-1,8-双(重氮)-辛-4-烯-2,6-二炔并光解以高产率得到1-苯基-1,3-
丁二炔。 6 K 下在
MTHF 中光解产生的
乙炔基苯基卡宾和 β-苯基
乙炔基卡宾处于平衡状态,其中后者在 90 K 下占主导地位。