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Paper | Regular issue | Vol 32, No. 12, 1991, pp.2399-2405
Published online, 1st January, 1970
DOI: 10.3987/COM-91-5858
Copper (I) Iodide-promoted Cyclization of Enaminones. Synthesis of 1,2,3,4-Tetrahydro-4-oxo-β-carbolines

Shyh-Chyun Yang, Huey-Min Wang, Ching-Shwu Kuo, and Ling-Ching Chen*

*Graduate Institute of Pharmaceutical Sciences, Kaohsiung Medical College, 100 Shih Chuen 1st Rd., Kaohsiung 80708, Taiwan, R.O.C.

Abstract

Anions derived from the N-2-bromoaryl-substituted enaminones were found to undergo smooth cyclization to give 1,2,3,4-tetrahydro-4-oxo-β-carbolines when heated with copper (I) iodide in hexamethylphosphoric triamide.