Helvetica Chimica Acta p. 2102 - 2109 (1982)
Update date:2022-08-02
Topics:
Pino, Piero
Piccolo, Oreste
Straub, Barbara
Consiglio, Giambattista
Tran, Dich Cong
The UV. and CD. spectra of the optically active 2-, 3- and 4-(1-methylpropyl)-pyridines (1a,b,c) and of the corresponding (2-methylbutyl)pyridines (2a,b,c) have been investigated in hexane at RT. and at -85 deg C, in hexane/TFA and in aqueous HCl-solution.In 1c and 2c both the n -> ?* and the ? -> ?* transitions are optically active, an n -> ?* transition being located above 265 nm.The position and the sign of the CD. bands are greatly influenced by the position and the nature of the alkyl substituent.
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Doi:10.1016/S0022-328X(00)85789-7
(1981)Doi:10.1016/S0040-4039(01)81790-1
(1981)Doi:10.1016/j.tet.2004.07.080
(2004)Doi:10.1016/S0040-4020(01)97974-8
(1981)Doi:10.1021/jo00340a019
(1982)Doi:10.1021/jo00133a042
(1982)