作者:Y. Geetanjali、B. Rajitha、M. Kanakalingeswara Rao
DOI:10.1246/bcsj.59.1299
日期:1986.4
A novel synthesis of 2-aroyl-7H-furo[3,2-g][1]benzopyran-7-ones, viz., IIIa and b was reported by condensing 2-benzoyl- and 2-(p-methoxybenzoyl)-3-methyl-5-acetyl-6-hydroxybenzofuran (Ia and b) with C6H5CH2COONa-Ac2O. VI was synthesised by condensing 7-hydroxy-6-benzoyl-4,8-dimethylcoumarin (IV) with V. The basic ethers (IIId–j) were synthesised by demethylating IIIb with pyridinehydrochloride and
2-aroyl-7H-furo[3,2-g][1]benzopyran-7-ones 的新合成,即 IIIa 和 b 报告了通过缩合 2-苯甲酰基-和 2-(p-甲氧基苯甲酰基)- 3-甲基-5-乙酰基-6-羟基苯并呋喃(Ia 和 b)与 C6H5CH2COONa-Ac2O。VI 是由 7-羟基-6-苯甲酰基-4,8-二甲基香豆素 (IV) 与 V 缩合合成的。碱性醚 (IIId-j) 是通过用盐酸吡啶脱甲基化 IIIb 合成的,所得 IIIc 与 N,N-二烷基缩合-2-卤代烷胺盐酸盐。还提供了 UV、IR、1H NMR 和质谱数据。