Synthesis of novel 2H-chromene-3-carboxylate isoxazole/isoxazoline derivatives via 1,3-dipolar cycloaddition reaction (NOAC)
作者:B. Srinivas、G. L. D. Krupadanam
DOI:10.1134/s1070363217020293
日期:2017.2
of novel (3-phenylisoxazol-5-yl)methyl-2H-chromene-3-carboxylates (7a–7d) and (3-phenyl-4,5-dihydroisoxazol-5-yl)methyl-2H-chromene-3-carboxylates (8a–8p) by 1,3-dipolar cycloaddition, and nitrile oxide and alkyne cycloaddition (NOAC) is presented. The products are characterised by IR, 1H and 13C NMR, and ESI-MS data.
新颖(3-苯基异恶唑-5-基)的合成N-甲基-2- ħ色烯-3-羧酸盐(7A-7D)和(3-苯基-4,5-二氢异恶唑-5-基)甲基-2- ħ -chromene-介绍了通过1,3-偶极环加成反应生成的3-羧酸盐(8a–8p),以及一氧化氮和炔烃环加成反应(NOAC)。产物通过IR,1 H和13 C NMR以及ESI-MS数据表征。