Direct 2H n.m.r. analysis of the 2H-substituted 3- and 4-methylcycloheptenes produced by acid cleavage (CF3CO2D) of mixtures of 4- and 7-methylcyclohept-2-enyltrimethyl-silanes and -stannanes confirms stereospecific γ-anti attack by the electrophile.
对4和7-甲基环庚-2-烯基三甲基
硅烷与-
锡烷的混合物进行酸裂解(CF 3 CO 2 D)产生的2 H-取代的3和4-甲基
环庚烯的直接2 H nmr分析证实了立体特异性γ-防电击。