The reaction of dichloromethylene with 2,3-dimethylindole and 1,2,3,4-tetrahydrocarbazole

✍ Scribed by Brian Robinson

• Book ID: 104212504
• Publisher: Elsevier Science
• Year: 1962
• Tongue: French
• Weight: 286 KB
• Volume: 3
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(00)70846-x

✦ Synopsis

THE reaction of 2,3-dimethylindole in the presence of ethanolic sodium ethoxide and chloroform was first investigated by Plancher and Carrascol who obtained a single basic product which they formulated as I by analogy with results obtained by similar treatment of a-and u-cresol and 1,2,3,4-tetrahydrocarbazole. However, Parham and coworkers2 later observed that indene, in the presence of potassium t-butoxide under non-polar conditions gives, in 65-70$ yield, a product of structure II, this product 1 G. Plancher and 0. Carrasco, Atti Accad. Nazl. Lincei [5], &.,& I, 573 (1904); Chem. Zentr. II, 341 (1904). -2 W.E.