Pyrolysis of Alkyl Acetates. A Radical Pathway for the Formation of Minor Products
作者:Buchang Shi、Ying Ji、Hossein A. Dabbagh、Burtron H. Davis
DOI:10.1021/jo00083a028
日期:1994.2
Decyl acetate and decene pyrolysis under the same reaction conditions show that the formation of the minor products during the pyrolysis of esters occurs by a parallel, and not a secondary, reaction. The radioactivity observed in the CO2 and CO produced during the pyrolysis of 1-hexyl acetate-1-C-14 and the radioactivity in the methane from the pyrolysis of 1-hexyl acetate-2-C-14 strongly suggested a radical reaction pathway for the formation of the minor products. Considering the above results together with the radioactivity data of gas samples from the pyrolysis of 1-decyl-1-C-14 acetate, 1-hexyl-1 -C-14 acetate, and 1-heptadecyl-1-C-14 acetate leads to the conclusion that the mechanism of pyrolysis of esters may be viewed as a cyclo-D(E)D(N)A(N) mechanism for the formation of the major alkene product and a radical mechanism for the formation of minor products. A useful synthetic procedure for the preparation of high carbon number alkenes (>10) also results from this study.