Journal of the American Chemical Society p. 7252 - 7255 (1983)
Update date:2022-07-29
Topics:
Craine
Greenblatt
Woodson
Hortelano
Raban
Configurational analysis can be used as a probe for association constants for chelation of amides with alkali metals. Carbon-13 NMR spectroscopy indicates that tertiary amides, each bearing a triethylene oxide substituent at nitrogen, exist as a mixture of E and Z isomers. Addition of alkali metal cation (KSCN) increases the concentration of species with the Z configuration since this configuration can chelate potassium ion. High-field **1H NMR spectra have been used to determine the chelation constants for amides in the presence of KSCN. It has been determined that (a) the carbonyl oxygen is involved in chelation and (b) the number of ether oxygens on the substituent at nitrogen is the significant factor in the chelating ability of these ionophores.
View MoreHeliosense Biotechnologies, Inc.
Contact:+86-592-5667290
Address:Xiamen Torch Hi-tech Zone Venture Weiye Building S506
website:http://www.jairadhesales.com
Contact:0091-79-26431096
Address:309 Harikrupa Tower,Nr old Sharda Mandir Char Rasta,Ellisbridge
Hangzhou innopharma technology Co,.Ltd.
Contact:+86-13388601988
Address:Room845,lixin building, moganshan road, hangzhou, china
shijiazhuang shuanglian chemical industry co.,ltd
Contact:0311-82190302
Address:Luquan Intersection , Shijiazhuang--Taiyuan Expressway,Shijiazhuang City
Shangyu Sanhechemicals Co.,LTD.
Contact:86-0571-56696839
Address:Num.2952,Nanhuan Road,Binjiang District,Hangzhou,China
Doi:10.1007/BF00554209
(1980)Doi:10.1016/0040-4039(96)00157-8
(1996)Doi:10.1021/jm00182a005
(1980)Doi:10.1007/BF00777454
(1980)Doi:10.3184/174751916X14656662266973
(2016)Doi:10.1021/jm00379a004
(1985)