Heterocycles p. 2777 - 2784 (1995)
Update date:2022-08-03
Topics:
Matsuda, Yoshiro
Chiyomaru, Yasusige
Furuno, Kazuki
Nishiyori, Takanobu
The reaction of 4-amino-1,2,4-triazolium salts (5a,b) with polarized olefins (3a,b,4a) in the presence of K2CO3 in EtOH or DMSO directly yielded the back-donated 1,6-cyclization products, mesomeric betaines (6a-c,7a,b) via N-vinylimino ylides, while the r
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