Mass Spectrometry and Organic Analysis, part 14. The photolysis and mass spectra of medium and large ring ketones from C9 to C16
作者:K. H. Schulte-Elte、B. Willhalm、A. F. Thomas、M. Stoll、G. Ohloff
DOI:10.1002/hlca.19710540703
日期:1971.11.1
cyclic ketones from C9 to C16 has been carried out, and formation of cyclobutanols observed in only C11 to C16. Although in the mass spectrometer cyclobutanols are not formed, an initial transfer of a γ-hydrogen atom to the carbonyl group is shown to occur in the massspectra of all cyclic ketones higher than C10.
Photochemistry of macrocyclic ketones within zeolites: competition between norrish type I and type II reactivity
作者:V. Ramamurthy、Xue-Gong Lei、Nicholas J. Turro、Thillairaj J. Lewis、John R. Scheffer
DOI:10.1016/0040-4039(91)80562-k
日期:1991.12
Y zeolites gives Norrishtype I products in addition to the products obtained via the NorrishtypeII process, the only observed process in isotropic media. Enhancement of the type I over the typeII process is cation-dependent and especially large enhancements are obtained with Li and Na as cations. The zeolite effect is attributed to a reduction in the rate of the NorrishtypeII α-hydrogen abstraction