Oxalic acid as a catalyst for efficient synthesis of bis-

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• 作者：Nagnnath D. Kokare ; Jaiprakash N. Sangshetti ; Devan ; B. Shinde
• 关键词：Oxalic acid ; Bis-(indolyl)methanes ; 14-Aryl-14H-dibenzo[a ; j]xanthenes ; Aldehydes
• 刊名：Chinese Chemical Letters
• 出版年：2008
• 出版时间：October 2008
• 年：2008
• 卷：19
• 期：10
• 页码：1186-1189
• 全文大小：156 K

文摘

A simple, efficient, and environment benign route was developed for the preparation of bis-(indolyl)methanes and 14-aryl-14H-dibenzo[a,j]xanthenes from condensation of various aromatic aldehydes or ketones with indole, and 2-naphthol, respectively, using oxalic acid catalyst in aqueous medium. Use of cheap and easily available catalyst, better yields and simple reaction protocol are the advantages of the present method.