Chemical and Pharmaceutical Bulletin p. 2787 - 2792 (1991)
Update date:2022-08-06
Topics:
Ohta
Narita
Yuasa
Hatakeyama
Kobayashi
Kaibe
Kawasaki
Yamashita
4-Methyl-4H-pyrrolo[1,2-a]benzimidazol-2(1H)-one derivatives (11a-d) were synthesized by intramolecular acylation of 1-carboxymethyl-2,3-dimethylbenzimidazolium halides (9a and 8b-d) in good yields. Treatment of the iodide (8a) with an excess of refluxing
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