Trifluoropropenes as Dipolarophiles.

K Tanaka, T Mori, K Mitsuhashi

Index: Tanaka, Kiyoshi; Mori, Takami; Mitsuhashi, Keiryo Bulletin of the Chemical Society of Japan, 1993 , vol. 66, # 1 p. 263 - 268

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Citation Number: 44

Abstract

The cycloaddition of C-phenyl-N-methylnitrone with 3, 3, 3-trifluoropropene and methyl 4, 4, 4-trifluoro-2-butenoate regio-and stereoselectively gave trans-2-methyl-3-phenyl-5- trifluoromethylisoxazolidine (3a) and methyl 2-methyl-c-3-phenyl-t-5-trifluoromethyl-r-4- isoxazolidinecarboxylate (3b), respectively, as major products. The cycloaddition with 3, 3, 3- trifluoro-1-nitropropene proceeded regiospecifically to give 2-methyl-c-4-nitro-r-3-phenyl-t- ...