作者:Guang-xiang Zhong、Hong-dan Hu、Chun-nian Xia、Jian-song Jiang、Ting-ting Chen
DOI:10.1007/s10870-010-9728-4
日期:2010.9
The title compounds, 2′,4′-difluoro-4-[(4-methylbenzoyl)oxy]-N-[4-nitro-3-(trifluoromethyl) phenyl]-[1,1′-biphenyl]-3-carboxamide 2a and 2′,4′-difluoro-4-[(4-chlorobenzoyl)oxy]-N-[4-nitro-3-(trifluoromethyl)phenyl]-[1,1′-biphenyl]-3-carboxamide 2b, synthesized from diflunisal, a registered anti-inflammatory drug, via amidation of carboxlic acid and esterification of phenolic hydroxy group and recrystallized from butanone-ethanol, were confirmed by single-crystal X-ray diffraction [CCDC 753735 and 753736]. The 2a crystallizes in triclinic space group Pī with cell parameters a = 10.562(2) Å, b = 10.696(2) Å, c = 11.061(2) Å, α = 80.503(7)°, β = 84.722(7)°, γ = 73.553(7)° and Z = 2. The 2b crystallizes in triclinic space group Pī with cell parameters a = 9.348(3) Å, b = 11.150(3) Å, c = 11.798(4) Å, α = 106.627(4)°, β = 93.223(4)°, γ = 91.579(5)° and Z = 2. Their packing are stabilized by intermolecular N–H···O hydrogen bonds. The title compounds, 2′,4′-difluoro-4-[(4-methylbenzoyl)oxy]-N-[4-nitro-3-(trifluoromethyl)phenyl]-[1,1′-biphenyl]-3-carboxamide 2a and 2′,4′-difluoro-4-[(4-chlorobenzoyl)oxy]-N-[4-nitro-3-(trifluoromethyl) phenyl]-[1,1′-biphenyl]-3-carboxamide 2b, synthesized from diflunisal, a registered anti-inflammatory drug, via amidation of carboxlic acid and esterification of phenolic hydroxy group, were confirmed by single- crystal X-ray diffraction showing their packing are stabilized by intermolecular hydrogen bonds .
标题化合物,2′,4′-二氟-4-[(4-甲基苯甲酰)氧]-N-[4-硝基-3-(三氟甲基)苯]-[1,1′-联苯]-3-羧酰胺2a和2′,4′-二氟-4-[(4-氯苯甲酰)氧]-N-[4-硝基-3-(三氟甲基)苯]-[1,1′-联苯]-3-羧酰胺2b,是通过对羧酸的酰胺化和对酚羟基的酯化反应从已注册的抗炎药物双氟尼沙尔合成的,并经过丁酮-乙醇重结晶,已通过单晶X射线衍射确认[CCDC 753735和753736]。化合物2a在三斜空间组Pī中结晶,单元参数为a = 10.562(2) Å,b = 10.696(2) Å,c = 11.061(2) Å,α = 80.503(7)°,β = 84.722(7)°,γ = 73.553(7)°,Z = 2。化合物2b在三斜空间组Pī中结晶,单元参数为a = 9.348(3) Å,b = 11.150(3) Å,c = 11.798(4) Å,α = 106.627(4)°,β = 93.223(4)°,γ = 91.579(5)°,Z = 2。它们的堆积通过分子间N–H···O氢键得到稳定。标题化合物2′,4′-二氟-4-[(4-甲基苯甲酰)氧]-N-[4-硝基-3-(三氟甲基)苯]-[1,1′-联苯]-3-羧酰胺2a和2′,4′-二氟-4-[(4-氯苯甲酰)氧]-N-[4-硝基-3-(三氟甲基)苯]-[1,1′-联苯]-3-羧酰胺2b,经过酰胺化和酯化反应确认了分子间氢键的稳定性。