A two component protocol for synthesis of 3-(2-(substituted phenylamino)thiazol-4-yl)-2H-chromen-2-ones
作者:AAMER SAEED
DOI:10.3906/kim-1204-81
日期:——
An efficient 2-component synthesis of a series of 3-(2-(substituted phenylamino)thiazol-4-yl)-2H-chromen-2-ones (3a--j) was achieved by the reaction of 3-(2-thiocyanatoacetyl)-2H-chromen-2-one (1) with a variety of suitably substituted anilines in 1:1 molar ratio in ethanol. The structures of the products were established by elemental analyses, and UV-vis, FTIR, ^1H and ^13}C NMR, and mass spectroscopy. 3-(2-(4-Methylphenylamino)thiazol-4-yl)-2H-chromen-2-one (3j) was further characterized by single crystal X-ray diffraction study. This compound, C_19}H_14}N_2OS, crystallizes in the orthorhombic space group Pna21, with Z = 4, and unit cell parameters a = 13.0785(11), b = 25.746(2), c = 4.7235(3) Å, \alpha = \beta = \gamma = 90°.
一种高效的二组分合成方法成功地合成了一系列3-(2-(取代苯基氨基)噻唑-4-基)-2H-香豆素-2-酮(3a--j),该反应是通过3-(2-硫氰酸乙酰基)-2H-香豆素-2-酮(1)与多种适当取代的苯胺在1:1摩尔比下于乙醇中反应实现的。产品的结构通过元素分析、紫外-可见光光谱、傅里叶变换红外光谱、^1H和^13}C核磁共振以及质谱进行确认。3-(2-(4-甲基苯基氨基)噻唑-4-基)-2H-香豆素-2-酮(3j)通过单晶X射线衍射研究进一步表征。该化合物C_19}H_14}N_2OS以正交晶系空间组Pna21结晶,Z = 4,晶胞参数为a = 13.0785(11)、b = 25.746(2)、c = 4.7235(3) Å,\alpha = \beta = \gamma = 90°。