A Remarkable Accelerating Effect of Ag-Salt on Intramolecular Cyclization of o-(1-Alkynyl)benzenesulfonamides

Herein, we report transition metal-catalyzed intramolecular cyclization of o-(1-alkynyl)benzenesulfonamides to afford 3-substituted benzothiazines regioselectively via a C−N bond forming reaction and Cu-catalyzed sequential C−N and C−C bond formation leading to the corresponding 3,4-disubstituted de...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Journal of organic chemistry 2007-10, Vol.72 (22), p.8547-8550
Hauptverfasser:	Barange, Deepak Kumar, Nishad, T. C, Swamy, N. Kumara, Bandameedi, Venkanna, Kumar, Dinesh, Sreekanth, Bukkapattanam R, Vyas, K, Pal, Manojit
Format:	Artikel
Sprache:	eng
Schlagworte:	Benzenesulfonamides Chemistry Copper - chemistry Cyclization Exact sciences and technology Molecular Structure Organic chemistry Salts - chemistry Silver - chemistry Stereoisomerism Sulfonamides - chemical synthesis Sulfonamides - chemistry
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	Herein, we report transition metal-catalyzed intramolecular cyclization of o-(1-alkynyl)benzenesulfonamides to afford 3-substituted benzothiazines regioselectively via a C−N bond forming reaction and Cu-catalyzed sequential C−N and C−C bond formation leading to the corresponding 3,4-disubstituted derivatives.
ISSN:	0022-3263 1520-6904
DOI:	10.1021/jo701470h