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Without heat supply, AIC13 and 3-substituted 1-acyl-2-phenylaziridines la,b, and 2b in benzene provided the respective Friedel-Crufts products 3a,b, and 4b (acylated 1 -substituted 2,2-diphenylethylamines) which in part were further converted to 1,1,2.2-tetraphenylethane (5). Oxazolines 6a,b, and 7b were also found. It is shown by means of 2,4,5-triphenyloxazoline 6b that oxazolines are intermediates for 3.4, and 5. The uncommon heterolysis of these particular oxazolines is discussed.

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