Molecules p. 481 - 495 (2001)
Update date:2022-08-04
Topics:
Jorgensen, Kare B.
Olsen, Ragnhild B.
Carlsen, Per H.J.
A series of neat 4-(2-alkenyl) substituted 5-methyl-3-phenyl-4H-1,2,4- triazoles were thermolyzed at 320°C producing a rearrangement products, of which the regioisomeric 1- and 2-substituted triazoles were the main products. The group migrations were rationalized in terms of consecutive S N2-type reactions. This mechanism was supported by a study of the alkylations of the triazoles which gave similar product mixtures. 4-(2-alkenyl) substituted 3-phenyl-4H-1,2,4-triazoles, on the other hand, gave predominantly elimination products.
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