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Ru(salen)-catalyzed asymmetric sulfimidation and subsequent [2,3]sigmatropic rearrangement
Masakazu Murakami1, Tatsuya Uchida, Bunnai Saito
1Department of Chemistry, Faculty of Science, Graduate School, Kyushu University 33, CREST, JST (Japan Science and Technology), Higashi-ku, Fukuoka 812-8581, Japan.
Chirality
|January 10, 2003
Abstract:
(OC)Ru(salen) 1 was found to catalyze sulfimidation of alkyl aryl sulfides in the presence of arylsulfonyl azide with high enantioselectivity, up to 99% ee. When the substrates were allylic sulfides, the resulting sulfimides underwent [2,3]sigmatropic rearrangement to give the corresponding N-allyl toluenesulsulfonamides with greater than 80% ee.