(b) Taylor, E. C., Ed.; Wiley-Interscience: New York
(b) Grünanger, P.; Vita-Finci, P. In The Chemistry of Heterocyclic Compounds; Taylor, E. C., Ed.; Wiley-Interscience: New York, 1991; Vol. 49, pp. 625.
Although the corresponding diastereomers 9-11/9′-11′ could be separated by chromatographic methods, they were used together for the dehydration reactions
Although the corresponding diastereomers 9-11/9′-11′ could be separated by chromatographic methods, they were used together for the dehydration reactions.
For a pertinent review on 1,5-dipolar electrocyclizations, see JAI Press: London
For a pertinent review on 1,5-dipolar electrocyclizations, see: Bakulev, V. A., Kappe, C. O., Padwa, A. In Organic Synthesis: Theory and Applications; JAI Press: London, 1996; Vol. 3, pp. 149-229.
4 elimination: Lange, G. L.; Nye, M. J.; Pereira, V. A.; Stratton, V.; Yurkevich, T. Can. J. Chem. 1984, 62, 1903-1907; Lange, G. L.; Pereira, V. A.; Weedle, M. Can. J. Chem. 1980, 58, 1639-1644; see also: Spangler, C. W. Boles; D. L. J. Org. Chem. 1972, 37, 1020-1023.
4 elimination: Lange, G. L.; Nye, M. J.; Pereira, V. A.; Stratton, V.; Yurkevich, T. Can. J. Chem. 1984, 62, 1903-1907; Lange, G. L.; Pereira, V. A.; Weedle, M. Can. J. Chem. 1980, 58, 1639-1644; see also: Spangler, C. W. Boles; D. L. J. Org. Chem. 1972, 37, 1020-1023.
4 elimination: Lange, G. L.; Nye, M. J.; Pereira, V. A.; Stratton, V.; Yurkevich, T. Can. J. Chem. 1984, 62, 1903-1907; Lange, G. L.; Pereira, V. A.; Weedle, M. Can. J. Chem. 1980, 58, 1639-1644; see also: Spangler, C. W. Boles; D. L. J. Org. Chem. 1972, 37, 1020-1023.
The relatively low yields of 15a/18a and 16a/19a are probably due to the small amount of starting compounds used for this thermolysis technique, which generally leads to a certain absolute loss of material
The relatively low yields of 15a/18a and 16a/19a are probably due to the small amount of starting compounds used for this thermolysis technique, which generally leads to a certain absolute loss of material.
38
0001873427
(a)
(a) Depierre, G. L.; Lämchen, M. J. Chem. Soc. 1963, 4693-4701.