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.
A discrete {Co<sub>4</sub>(μ<sub>3</sub>-OH)<sub>4</sub>}<sup>4+</sup>cluster with an oxygen-rich coordination environment as a catalyst for the epoxidation of various olefins
作者:Sun Young Lee、Namseok Kim、Myoung Mi Lee、Young Dan Jo、Jeong Mi Bae、Min Young Hyun、Sungho Yoon、Cheal Kim
DOI:10.1039/c5dt03422a
日期:——
A tetranuclear Co(ii) complex was active for epoxidation reactions of various olefins, and CoVO and CoIVO species were proposed to be the possible reactive intermediates.
Aluminumchloride can be utilized as an active catalyst for the highly regioselective hydrosilylation of 1-alkyl, 1-aryl, 1,1-dialkyl, and cyclic cyclopropanes with chlorodimethylsilane in hexane at room temperature.