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 MoreTianjin Emulsion Science&Technology Development Co.,Ltd
Contact:13901380442
Address:Vake Garden New Town New Yi Bai Road Beichen District Tianjin,China
Zhejiang Haizhou Pharmaceutical Co., Ltd.
website:https://www.haizhoupharma.com/
Contact:+86-576-88221016
Address:No. 19, Donghai 5th Avenue, Yanhai Industrial Zone, Linhai, Zhejiang, China
Changzhou Ansciep Chemical Co.,Ltd.
Contact:+86 519 8630 5871
Address:A-710 Boan International, 8 East Guangdian Road,Wujin,Changzhou
Contact:0086 533 2282832
Address:Zibo，Shandong
Jiaxing Anrui Material Technology Co., Ltd.
Contact:86-573-82651652 13305832579
Address:Room 407, Technology Building, 1369 Chennan Road, Jiaxing City, Zhejiang, China
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)
