名称:
Decomposition of perfluoro- (2,4,4,7,7,9 -hexamethyl- 3,8-dioxa-2,5,6,9-tetra-azadec-5-ene) in the presence of fluoroalkenes, ethyne, benzene and nitroso compounds
摘要:
Thermolysis of the azo compound (CF3)2NOC(CF3)2N = NC(CF3)2ON(CF3)2 (1) alone at 140-degrees-C gives nitrogen, hexafluoroacetone and the hydrazine (CF3)2NN(CF3)2 via (CF3)2N. radical coupling in quantitative yield, while from decomposition in the presence of the alkenes CF2 = CCl2, CF2 = CFCl and CF2 = CHF (ca. 1:1 molar ratio) the major products are the dimer [(CF3)2NCF2CCl2]2, trimer (CF2)2N(CF2CFCl)2CFClCF2N)CF3)2 and a mixture of tetramers (CF3)2N(C2HF3)4N(CF3)2, respectively. The (CF3)2N. radicals generated from 1 can also be trapped with bromine [ --> (CF3)2NBr] and nitroso compounds [ --> (CF3)2NNRO.(R = CF3 and Ph)], but with ethyne or benzene near-quantitative yields of the amine (CF3)2NH are obtained.