Rhodium-catalyzed transannulation of N-sulfonyl-1,2,3-triazoles and epoxides: regioselective synthesis of substituted 3,4-dihydro-2H-1,4-oxazines.

Xueji Ma, Shanfei Pan, Hangxiang Wang, Wanzhi Chen

Organic letters 2014 Sep 5

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Rhodium-catalyzed transannulation of 1,2,3-triazoles and ring-opening reactions of epoxides is described. A number of 3,4-dihydro-2H-1,4-oxazines are obtained in moderate yields probably involving generation of α-imino rhodium(II) carbene species.

Citation

Xueji Ma, Shanfei Pan, Hangxiang Wang, Wanzhi Chen. Rhodium-catalyzed transannulation of N-sulfonyl-1,2,3-triazoles and epoxides: regioselective synthesis of substituted 3,4-dihydro-2H-1,4-oxazines. Organic letters. 2014 Sep 5;16(17):4554-7