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Novel preparation of 2,1-benzothiazine derivatives from sulfonamides with [hydroxy(tosyloxy)iodo]arenes.

作者信息

Misu Yuhta, Togo Hideo

机构信息

Graduate School of Science and Technology, Chiba University, Yayoi-cho 1-33, Inage-ku, Chiba 263-8522, Japan.

出版信息

Org Biomol Chem. 2003 Apr 21;1(8):1342-6. doi: 10.1039/b301330h.

DOI:10.1039/b301330h
PMID:12929664
Abstract

Cyclization of sulfonamides bearing an aromatic ring at the beta-position with various organohypervalent iodine compounds was carried out to form the corresponding 2,1-benzothiazine derivatives. Among them, the cyclization effectively proceeded with [hydroxy(tosyloxy)iodo]arenes through ionic pathways. The same treatment of a sulfonamide bearing a 4-methoxyphenyl group at the beta-position generated a spiro compound.

摘要

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