Journal of the American Chemical Society p. 3319 - 3325 (1989)
Update date:2022-08-05
Topics:
Baldwin, John E.
Ghatlia, Naresh D.
The relative rates of electrocyclic isomerization of 5,5-dimethylbicyclo<2.1.0>pent-2-ene and the 2-(2)H, 1,2,4-(2)H3, 1,2,3,4-(2)H4, and 1,4-(13)C2 isotopic variants of this system have been determined at 43.6-44.0 deg C.There is no detectable carbon-13 effect; deuterium substitution at C(2) is associated with a small kH/kD effect, 1.02, and a deuterium at C(1) results in a very large effect, 1.26.The kH/kD(d3) effect between 24.6 and 54.7 deg C shows some sensitivity to temperature, ranging from 1.83 to 1.64.The data exclude an important magnetic isotopeeffect on the isomerization and provide no support for a singlet --> triplet intersystem crossing along the reaction coordinate.
View MoreContact:410-273-7300; 800-221-3953
Address:4609 Richlynn Dr., PO Box 369, Belcamp, MD, 21017-0369, USA
zhenjiang runjing high purity chemical co ltd
Contact:+86-511-83361155
Address:No.8.haixi road,international chemical park
SHANDONG CREDAGRI CHEMICAL CO., LTD.
Contact:+86-531-88872050
Address:ROOM 601A, BUILDING 2, SHUNTAI SQUARE, NO. 2000 SHUNHUA ROAD, HI-TECH DEVELOPMENT ZONE, JINAN, CHINA.
Fusilin chemical science & technology co., ltd.
Contact:532-80698166/86057573, +86-400-669-7885
Address:School of Material Science & Engineering, Shandong Uinversity of Science & Technology, Huangdao Zone, Qindao, Shandong
China Xi'an Nutrend Biotechnology Co., Ltd
Contact:86-29-88890810 18629329527
Address:Building C Tangfeng Intl Fenghui South Road,Xi'an High-tech Zone,Shaanxi China
Doi:10.1016/j.tet.2015.07.038
(2016)Doi:10.1016/j.bmc.2008.05.002
(2008)Doi:10.1021/jm00384a005
(1987)Doi:10.1002/adsc.200700142
(2007)Doi:10.1002/ejoc.200800143
(2008)Doi:10.1246/cl.2008.624
(2008)