Tetrahedron Letters p. 4397 - 4400 (1982)
Update date:2022-08-03
Topics:
Nesi, Rodolfo
Chimichi, Stefano
De Sio, Francesco
Pepino, Roberto
Tedeschi, Piero
In contrast with a previous report, permanganate oxidation of the title compaund 3 gives the nitroisoxazolone 8 and not 3-methyl-4-nitroisoxazole-5-carboxylic acid 2 ; a reaction pathway involving the spirocyclisation of the carboxylate 10, is suggested.
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