ChemInform Abstract: Rates of Decarboxylation of Acyloxy Radicals Formed in the Photocleavage of Substituted 1-Naphthylmethyl Alkanoates

Autor:	J. W. Hilborn, James A. Pincock
Rok vydání:	2010
Předmět:	Electron transfer Chemistry Decarboxylation Radical Photodissociation General Medicine Ion pairs Photochemistry Medicinal chemistry Bond cleavage Excited singlet Homolysis
Zdroj:	ChemInform. 22
ISSN:	0931-7597
DOI:	10.1002/chin.199129076
Popis:	Rates of decarboxylation (k CO2 R ) have been estimated for the acyloxy radicals formed in the photolysis of substituted 1-naphthylmethyl alkanoates. These rates are based on a proposed mechanism involving initial carbon-oxygen homolytic bond cleavage from the excited singlet state. The products are formed by two competing pathways: electron transfer in the radical pair to give an ion pair and decarboxylation. Measured product yields along with an estimate of the electron-transfer rate (k ET ) allow calculation of k CO2 R as a function of R. The values obtained are the following (R, k (10 9 s −1 )): CH 3
Databáze:	OpenAIRE
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