2-benzopyrylium salts. XXXVII. Oxygen analogs of reissert compounds : molecular structure and reactions with sodium hydroxide
作者:Irina V. Shcherbakova、Evghenii V. Kuznetsov、Iosif A. Yudilevich、Olga E. Kompan、Alexandru T. Balaban、Aleksei H. Abolin、Alexander V. Polyakov、Yurii T. Struchkov
DOI:10.1016/s0040-4020(01)89812-4
日期:1988.1
cyanide addition product 2d of 1-isopropyl-3-methyl-2-benzopyrylium salts. Depending on the other substituent in position 1, 1-cyanoisochromenes in aqueous solutions of sodium hydroxide eliminate hydrogen cyanide 2a, b, e, undergo inter-3a, b or intra-mlecular 2c, d recyclisation, or hydrolysis of the cyano group in 2f ; reaction products include α-naphthols 7c, e, β-naphthol 7d, acylchrysenes 5a,
1-氰基异色烯在红外光谱中CN拉伸带的弱强度明显取决于分子中CN基团的空间位置,因为它是通过X射线结构分析确定了1-氰化物加成产物2d的异丙基-3-甲基-2-苯并吡啶鎓盐。取决于位置1上的其他取代基,氢氧化钠水溶液中的1-氰基异色酮消除氰化氢2a,b,e,经历3a,b或分子内2c,d再循环或2f中氰基的水解; 反应产物包括α-萘酚7c,e-萘酚7d,酰基,5a,b或异色烯酰胺11f,得到稳定的1-亚烷基异色烯3e,3-羟基-1-亚烷基异色烯的中间体为通过隔离在10c,d情况下证明