Journal of the Chemical Society. Chemical communications p. 1692 - 1693 (1986)
Update date:2022-07-29
Topics:
Ibata, Toshikazu
Isogami, Yasushi
Nakano, Shuji
Nakawa, Hiroyuki
Tamura, Hatsue
The reaction of 2-alkyl or -aryl substituted 5-metoxy-4-(p-nitrophenyl)oxazoles (1) with tetracyanoethylene gave 2-substituted methyl 3,3,4,4-tetracyano-5-(p-nitrophenyl)-4,5-dihydro-3H-pyrrole-5-carboxylates (2) as formal <3+2> cycloadducts; these were produced via a zwitterionic mechanism involving oxazole ring opening.
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