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
Shanghai Yuking Water Soluble Material Tech Co., Ltd
Contact:86-21-68286299
Address:4F, 13B, No. 600, South Xinyuan Road 201306, Shanghai, China
jiangsu hualin chemical co.,ltd.
Contact:86-25-87787402
Address:jaingsu,china
website:http://www.mingchem.com/en/index
Contact:0519-85170101-802
Address:Fifth Floor,B of Beihua Buliding,520 Road of Science and Education City,Changwu middle road NO.801,Wujin District,Changzhou,Jiangsu province
Hubei Onward Bio-Development Co., Ltd.
Contact:+86-718-8417012
Address:No.517,Shizhou Avenue,Enshi City,Hubei Province,China,445002
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)
