Mechanistic Studies of Adamantylacetophenones with Competing Reaction Pathways in Solution and in the Crystalline Solid State
作者:Vince M. Hipwell、Miguel A. Garcia-Garibay
DOI:10.1021/acs.joc.9b01720
日期:2019.9.6
engineer and observe competing Norrish type II reaction pathways in the crystalline state. It was shown that excited state competition for hydrogen abstraction between secondary adamantyl and benzylic hydrogens is affected not only by the relative bond dissociation energies but also by the molecular conformation in the crystal. The subsequent fate of the resulting biradical species is determined by competition
Stereoselectivity reversal of a photochemical reaction in the solid state
作者:Stephen Evans、Nalamasu Omkaram、John R. Scheffer、James Trotter
DOI:10.1016/s0040-4039(00)98257-1
日期:1985.1
The stereoselectivity of Norrish typeIIcyclobutanol formation resulting from photolysis of α-adamantyl-p-methoxyacetophenone is altered in favor of the more hindered cis isomer as the reaction medium is changed from isotropic liquid phases (benzene or acetonitrile) to the pure crystal. Based on the reactant X-ray crystal structure, it is suggested that the intermediate 1,4-biradical in the solid
Release of Guests from Encapsulated Masked Hydrophobic Precursors by a Phototrigger
作者:Nithyanandhan Jayaraj、Pradeepkumar Jagadesan、Shampa R. Samanta、José P. Da Silva、V. Ramamurthy
DOI:10.1021/ol4019024
日期:2013.9.6
Examples of release of organic acids from encapsulated p-methoxyphenacyl esters provided here demonstrate the value of a phototrigger strategy to release chemicals of interest in water from hydrophobic precursors. In this study, a photochemical beta-cleavage process centered on the p-methoxyphenacyl group is exploited to release the acid of interest from a water-soluble capsule made up of octa acid.
Reaction pathways and asymmetric synthesis in the solid-state photochemistry of α-adamantylacetophenones
作者:S. V. Evans、J. Trotter
DOI:10.1107/s0108768189005690
日期:1989.10.1
Composés hétérocycliques aromatiques, compositions pharmaceutiques et cosmétiques les contenant et utilisations
申请人:CENTRE INTERNATIONAL DE
RECHERCHES DERMATOLOGIQUES GALDERMA (C.I.R.D. GALDERMA)