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2-Ethynylindene by rearrangement of 2-vinylidene-2H-indene and 2-indenylvinylidene

✍ Scribed by Curt Wentrup; Edeline Wentrup-Byrne; Paul Müller; Jürgen Becker


Publisher
Elsevier Science
Year
1979
Tongue
French
Weight
191 KB
Volume
20
Category
Article
ISSN
0040-4039

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## Abstract Heating of 1′‐(__N__‐substituted carbamoyl)methylspiro[2__H__‐1‐benzopyran‐2,2′‐[2__H__]indoles] with potassium hydroxide in ethanol yields diastereomeric 5a,13‐methano‐6__H__‐1,3‐benzoxazepino[3,2‐__a__]indole‐12‐carbox‐amides. Reduction of the latter with sodium borohydride affords 1,