Differing substituent effects on rates and regioselectivities in the di-π-methane rearrangement. New photochemical theory: excitation distribution (the ΔP matrix), reaction inhibition by vertical excited state stabilisation, ground Vs. excited state control
作者:Howard E. Zimmerman、William T. Gruenbaum、Robert T. Klun、Mark G. Steinmetz、Thomas R. Welter
DOI:10.1039/c39780000228
日期:——
consistent pattern of control of regioselectivity by substituents was observed in three di-π-methane systems while the effect on rates varied with the system; from this three new concepts were derived: (i) a method allowing one to discern how excitation energy is partitioned throughout a molecule initially and during transformation to product, (ii) evidence that excessive verticalexcitedstate stablization