References
- Gupton , J. T. , Andrew , S. A. and Lizzi , M. J. 1982 . Synth. Commun. , 12 : 361
- Gupton , J. T. and Layman , W. J. 1987 . J. Org. Chem. , 52 : 3683
- Gupton , J. T. , Zembower , D. and Miller , J. 1988 . Synth. Commun. , 18 : 1891
- Gupton , J. T. , DiCesare , J. , Idoux , J. P. and Brown , J. 1989 . ibid , 19 : 1413
- Gupton , J. T. , Krolikowski , D. and Rusler , M. 1989 . ibid , 19 : 2415
- The NMR δ difference for the CH2 protons of structure 1b/1c before and after quaternization was 1.39. The NMR δ difference for the vinyl H for structure 1b/1c before and after quaternization was 0.85. This indicates that the quaternary nitrogen is closer to the CH2 than the vinyl H and, therefore, structure 1c is favored over 1b
- Oh , D. H. and Han , D. I. 1988 . Synth. Commun. , 18 : 2111
- Viehe , H. G. , Janousek , Z. and Merenyi , R. 1985 . Accts. Chem. Res. , 18 : 148
- Infrared spectra were recorded on a Perkin-Elmer Model 1420 infrared spectrometer as thin films or nujol mulls. NMR spectra were obtained in CDCl3 or DMSO-d6 solutions, with (Me)4 Si as an internal standard, on a Varian Gemini 200 MHz spectrometer. Boiling points and melting points are uncorrected