Synthesis and Crystal Structure of 4,7-Diaryl-5-oxo-4<i>H</i>-benzo[<i>b</i>]pyran Derivatives
作者:Bin Cui、Li-Zhuang Chen、Xiao-Lei Hu、Ming Wang、Guang-Fan Han
DOI:10.1002/jhet.895
日期:2012.7
infrared (IR), mass spectrometry (MS), 1H NMR, and elemental analysis. The crystal structure of trans/cis‐2‐amino‐3‐cyano‐7‐(4′‐methoxo‐phenyl)‐4‐phenyl‐5‐oxo‐4H‐benzo[b]pyran, g, was determined by single crystal X‐ray diffraction analysis. The crystal of compound g belongs to monoclinic with space group P 21/c, a = 8.477(3) nm, b = 18.948(6) nm, c = 24.915(7) nm, α = 90.00°, β = 107.388(11)°, γ= 90.00°
一种绿色便捷的方法,可以在存在丙二腈的情况下,由适当的芳族醛和5-芳基-1,3-环己二酮与丙二腈合成一系列4,7-二芳基-5-氧代-4 H-苯并[ b ]吡喃衍生物描述了稀盐酸作为催化剂(30 mmol / L)。该方法具有许多优点,例如环境友好,成本低,产率高以及后处理程序简单。所有化合物的结构均通过红外(IR),质谱(MS),1 H NMR和元素分析进行表征。反式/顺式-2-氨基-3-氰基-7-(4′-甲氧基-苯基)-4-苯基-5-氧代-4 H-苯并[ b ]吡喃的晶体结构,g通过单晶X射线衍射分析确定。化合物g的晶体属于单斜晶,空间群为P 21 / c,a = 8.477(3)nm,b = 18.948(6)nm,c = 24.915(7)nm,α= 90.00°,β= 107.388(11) )°,γ= 90.00°,Z= 8,V= 3.819(2)nm 3,R 1= 0.0754,wR