Photoinduced Oxygen-Atom Transfer from NO_2 to Alkenes, Alkynes, and Amines in Low-Temperature Argon Matrices

摘要

The cryogenic-matrix technique is ideally suited for the study of photoinitiated bimolecular chemistry since the reactants of interest can be brought together as sustained pairs, and reaction can be followed in complete absence of diffusional processes that complicate elucidation of the reaction path in liquid-solution or gas phase. Photolysis wavelength dependence of the chemistry, both in terms of quantum efficiency and the course the reaction takes, can conveniently be determined by laser initiation in an inert, solid environment. Particularly useful for uncovering reaction pathways is the possibility to trap chemical intermediates. These advantages are fully exploited in the studies on visible-light induced photooxidation of alkenes, dienes, alkynes, and amines by N0_2.