Photochemical transformations of cycloalkyl nitrites isolated in argon matr
ices have been studied. In the case of cyclohexyl, cycloheptyl and cyclooct
yl nitrites complexes of HNO with the corresponding cycloalkyl ketones were
formed. Photochemical irradiation of cyclobutyl nitrite resulted in the fo
rmation of 4-nitrosobutanal as the major product. Under similar conditions
irradiation of cyclopentyl nitrite gave a mixture of 5-nitrosocyclopentanal
and the complex of cyclopentanone and HNO.