The reaction of 3‐(1‐propanoyloxybenzyl)‐2H‐1‐benzopyran‐2‐one (2) with the nitriles of 4‐dimethylaminobenzoic, 4‐diethylaminobenzoic, nicotinic, isonicotinic, and 3‐dimethylaminopropionic acid in conc. H2SO4 yields the amides 3a‐e. 3a‐d were converted into hydrochlorides.
3-(1-丙酰氧基苄基)-2H-1-苯并
吡喃-2-一(2)与
4-二甲氨基苯甲酸、4-二乙
氨基
苯甲酸、
烟碱、异
烟碱和3-二甲
氨基丙酸的腈的浓度反应。H2SO4 生成酰胺 3a-e。3a-d 被转化为盐酸盐。