Journal of the Chemical Society. Perkin Transactions 2 (2001) p. 2327 - 2334 (1996)
Update date:2022-08-03
Topics:
Hoogesteger, Frans J.
Grove, David M.
Jenneskens, Leonardas W.
De Bruin, Theodorus J. M.
Jansen, Bart A. J.
For a series of rodlike aliphatic oximes (1-4) the influence of the oxime substituent on the 13C NMR chemical shifts has been studied. Various 2D NMR techniques were applied for the unequivocal assignment of their 1H and 13C resonances. For bicyclohexylidene oximes 1-2 long-range substituent effects on the 13C NMR chemical shifts of aliphatic carbon atoms of the six-membered rings due to the presence of the oxime group are discernible up to positions six carbon-carbon bonds distant from the iminyl carbon! The 13C NMR data obtained for bicyclohexyl oximes 3-4 reveal that in this series the effect is limited to carbon atoms which are five bonds distant from the iminyl carbon. The observed differences between the two series is attributed to the presence of an olefinic double bond in 1-2, whch becomes polarized by the electric field of the oxime substituent.
View MoreJi'an Hairui Natural Plant Co. Ltd.
Contact:0796-8105528
Address:Meilin industry park, Qingyuan district Ji'an City, Jiangxi Province
Contact:86-791-86629460
Address:1-6F, 118 Xinzhou road, Nanchang, Jiangxi, China
Ji'an Hairui Natural Plant Co. Ltd.
Contact:0796-8105528
Address:Meilin industry park, Qingyuan district Ji'an City, Jiangxi Province
Changzhou naidechemical Co.Ltd
Contact:+86-519-82589807
Address:NO.25,Houyang street,Jintan,Changzhou City
Contact:+86-0311-84455288-844
Address:Mayu Industrial Park, Jinzhou, Hebei, China.
Doi:10.14233/ajchem.2013.14573A
(2013)Doi:10.1139/v96-217
(1996)Doi:10.1039/c19670000926
(1967)Doi:10.1080/00397919708004816
(1997)Doi:10.1021/ja962494z
(1997)Doi:10.1016/S0022-328X(00)90904-5
(1968)
