ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Synthesis of 7,8-dihydro-5H-isoindolo[1,2-b][3]benzazepin-5-one from narceine imide N-oxide

B. Proksa, Z. Votický, and M. Štefek

Slovakofarma, 920 27Hlohovec

Abstract:  Narceine imide N-oxide (I) reacts with acetic anhydride to give not the anticipated demethylation product of compound /, but7,8-dihydro-3,4,12-trimethoxy-7-dimethylamino-10,11 -methylenedioxy-5H-isoindolo[ 1,2-b ] [3]benzazepin-5-one (II) via an intramolecular immonium salt. Hofmann degradation of II yielded 3,4,12-trimethoxy-10,11 -methylenedioxy-5H-isoindolo[l,2-b][3]benzazepin-5-one (///).

Full paper in Portable Document Format: 342a248.pdf

Chemical Papers 34 (2) 248–252 (1980)