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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 25, 1995 - Issue 7
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Original Articles

Unusual Sulfonation of 1-(4-R-Phenyl)-2.6,6-trimethyl-4-oxo-4,5,6,7-tetrahydroindoles Under Schmidt Conditions

Roberto Martínez Instituto de Química, Universidad Nacional Autónoma de México, C. U., Circuito Exterior, Coyoacán, 04510, México, D.F., México
,
Gustavo Avila Facultad de Química, Universidad Nacional Autónoma de México, C. U., Circuito Exterior, Coyoacán, 04510, México, D.F., México
&
Eduardo Reyes Facultad de Química, Universidad Nacional Autónoma de México, C. U., Circuito Exterior, Coyoacán, 04510, México, D.F., México
Pages 1071-1076 | Received 28 Sep 1994, Published online: 23 Sep 2006
 
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Abstract

Unexpected 4-oxo-tetrahydroindoles 3-sulfonic acids were synthesized from their corresponding 4-oxo-tetrahydroindoles using sodium azide and sulfuric acid (Schmidt conditions).

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