Reaction of methylene from the photolysis of keten with 1,1-difluoroethane yields activated difluoropropanes both by insertion and by the combination of radicals. In the presence of oxygen the ratios of k(elimination of hydrogen fluoride)/k(deactivation by collision) for difluoropropanes formed by insertion are 1·24 cm. for 1,1-difluoropropane and 19 cm. for 2,2-difluoropropane.
J. A. Kerr, B. V. O'Grady and A. F. Trotman-Dickenson, J. Chem. Soc. A, 1966, 1621 DOI: 10.1039/J19660001621
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