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Paper | Special issue | Vol 47, No. 1, 1998, pp.375-382
Published online, 1st January, 1970
DOI: 10.3987/COM-97-S(N)41
Chemoselectivity in the Intramolecular Aza-Wittig Reaction of N-[2-(Trisubstituted Phosphoranylidene)aminobenzoyl]-2-pyrrolidone-5-carboxylic Acid Derivatives

Tomohiro Okawa, Toshiyuki Sugimori, Shoji Eguchi,* and Akikazu Kakehi

*Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya, Aichi 464-8601, Japan


The intramolecular aza-Wittig reaction of (5S)-N-[2-(trisubstituted phosphoranylidene)aminobenzoyl]-2-pyrrolidone-5-carboxylic acid derivatives gave chemoselectively pyrrolo[2,1-c][1,4]benzodiazepin derivatives or pyrrolo[2,1-b]quinazoline derivatives depending on their substituents and phosphorus reagent.