Organic Mass Spectrometry p. 270 - 276 (1992)
Update date:2022-07-29
Topics:
Stringer, Michael B.
Underwood, Dennis J.
Bowie, John H.
Allison, Colin E.
Donchi, Kevin F.
Derrick, Peter J.
Intramolecular 13C and 2H isotope effects have been measured for unimolecular losses of ethene (the McLafferty rearrangement) from metastable molecular ions of 2-ethyl-1-phenylbutan-1-one, 3-ethylpentan-2-one and heptan-4-one.Primary and secondary deuterium isotope effects are observed at the γ-(terminal) and β-positions, respectively.Large primary 13C isotope effects occur at β-positions and for the γ positions of 3-ethylpentan-2-one and heptan-4-one.The carbon isotope effects in the cases of the doubly isotopically labelled CH3COCH(C2H5)((13)CH2CH3) and CD3COCD(C2D5)((13)CD2CD3) are 1.17 (+/-0.01) and 1.04 (+/-0.01), respectively.All of these isotope effects are consistent with a stepwise mechanism in which more than one step is rate determining.
View MoreHebei Think-Do Environment Co., Ltd
website:http://www.thinkdo-environment.com
Contact:0311-86510809-
Address:No 6, Shilian Middle Street, Circular Chemical Industry Park
Contact:+86-0512-88957371
Address:shanghai
Hangzhou Ledun Technology Co.,Ltd.
Contact:86-571-18767088918
Address:No.6 street,XiaSha,Hangzhou,China.
Shanghai Hongbang Medical Technology CO.,. Ltd
Contact:13671516988 /18917636693
Address:Room1, No67 Building, Yongde Road369, Wujing Town, Minhang Districy, Shanghai CIty, China.
Zhuhai Rundu Pharmaceutical co.,Ltd
Contact:+86-756-7630755
Address:No.6,North Airport Road,Sanzao Town,Jinwan District
Doi:10.1021/ja01363a024
(1931)Doi:10.1016/j.jcat.2013.09.003
(2014)Doi:10.1134/S107042801210003X
(2012)Doi:10.1039/c39860000396
(1986)Doi:10.1002/chem.201201670
(2012)Doi:10.1021/jo302267f
(2012)
