T. Okawa et al., CHEMOSELECTIVITY IN THE INTRAMOLECULAR AZA-WITTIG REACTION OF YLIDENE)AMINOBENZOYL]-2-PYRIDONE-5-CARBOXYLIC-ACID DERIVATIVES, Chemistry Letters, (10), 1996, pp. 843-844
The intramolecular aza-Wittig reaction of (trisubstituted-phosphoranyl
idene)aminobenzoyl]-2- pyridone-5-carboxylic acid derivatives chemosel
ectively gave 5-pyrrolo[2,1-c][1,4]benzodiazepinone derivatives or 5(1
H)-pyrrolo[2,1-b]quinazolinone derivatives depending on the substituen
ts.