作者:Chun-nian Xia、Wei-xiao Hu、Wei Zhou、Guo-hong Wang
DOI:10.1007/s10870-008-9341-y
日期:2008.8
The title compound, C16H22O4, synthesized by modified Knoevenagel condensation of protocatechualdehyde with monoheptyl-malonate and recrystallized from benzene, was confirmed by single-crystal X-ray diffraction (CCDC 272827). The compound crystallizes in triclinic space group Pī with cell parameters a = 5.296(3) Å, b = 10.711(13) Å, c = 13.870(4) Å, α = 98.84(7)°, β = 90.97(4)°, γ = 96.77(7)° and Z = 2. The structure is the E isomer and its packing is stabilized by intermolecular O–H···O and C–H···O hydrogen bonds. The title compound, C16H22O4, synthesized by modified Knoevenagel condensation, was confirmed by single-crystal X-ray diffraction showing its structure is in E isomer and its packing is stabilized by hydrogen bonds.
标题化合物 C16H22O4 是通过原儿茶醛与丙二酸单庚酯的改良克诺文纳格尔缩合反应合成的,并从苯中重结晶,其单晶 X 射线衍射结果(CCDC 272827)证实了该化合物的存在。该化合物在三linic 空间群 Pī 中结晶,晶胞参数 a = 5.296(3) Å, b = 10.711(13) Å, c = 13.870(4) Å, α = 98.该结构为 E 异构体,其堆积通过分子间 O-H-O 和 C-H-O 氢键而稳定。通过改进的克诺文纳格尔缩合反应合成的标题化合物 C16H22O4 经单晶 X 射线衍射证实其结构为 E 异构体,其堆积通过氢键稳定。