Structures of derivatives of cyclic o-acylbenzoic acids, including the chloride, endo- and exocyclic amides, esters and anhydrides, are examined. 3-Chloro-1(3H)-isobenzofuranone (1), orthorhombic, Pbca, a = 11.616 (5), b = 8.120 (3), c = 15.640 (9) Å; 3-methoxy-3-phenyl-1(3H)-isobenzofuranone (3), orthorhombic, P212121, a = 6.923 (2), b = 8.291 (4), c = 21.551 (8) Å; 3-hydroxy-3-phenyl-N-propyl-1(3H)-isoindolone (4), orthorhombic, P212121, a = 8.662 (4), b = 9.551 (7), c = 17.649 (14) Å; 3-(N-morpholino)-1(3H)-isobenzofuranone (5), triclinic, P1¯, a = 6.172 (4), b = 11.163 (7), c = 17.33 (2) Å, α = 105.91 (6), β = 99.85 (6), γ = 97.57 (5)°; 3-(2′-benzoylbenzoyloxy)-3-phenyl-1(3H)-isobenzofuranone (7), triclinic, P1¯, a = 9.694 (3), b = 10.505 (4), c = 11.163 (4) Å, α = 80.58 (3), β = 80.41 (3), γ = 76.49 (3)°; bis[1(3H)-isobenzofuranone-3-yl]ether (8), monoclinic, I2/a, a = 15.31 (2), b = 6.111 (12), c = 28.30 (5) Å, β = 101.61 (12)°. An open oxoacid tertiary amide is also described: N-morpholino 2′-benzoylbenzamide (6): monoclinic, P21/c, a = 6.844 (4), b = 15.696 (8), c = 14.154 (7) Å, β = 99.43 (4)°. Pseudoacid derivatives form planar isobenzofuran and isoindole rings, and the former aldehyde/ketone carbon–heteroatom endocyclic and exocyclic bond distances show bond length variations which correlate with the relative basicities of the attached groups. Structures of both endocyclic and exocyclic nitrogen pseudoamides are reported as well as examples of the normal–pseudoanhydride and the dipseudoanhydride.
研究了环状邻酰基苯甲酸衍生物的结构,包括氯化物、内环和外环酰胺、酯和酸酐。3-氯-1(3H)-异苯并呋喃酮 (1),正方体,Pbca,a = 11.616 (5),b = 8.120 (3),c = 15.640 (9) Å;3-甲氧基-3-苯基-1(3H)-异苯并呋喃酮 (3),正方体,P212121,a = 6.923 (2),b = 8.291 (4),c = 21.551 (8) Å;3-羟基-3-苯基-N-丙基-1(3H)-异吲哚酮 (4),正方晶,P212121,a = 8.662 (4),b = 9.551 (7),c = 17.649 (14) Å;3-(N-吗啉基)-1(3H)-异苯并呋喃酮 (5),三棱晶,P1¯,a = 6.172 (4),b = 11.163 (7),c = 17.33 (2) Å,α = 105.91 (6),β = 99.85 (6),γ = 97.57 (5)°;3-(2′-苯甲酰苯甲酰氧基)-3-苯基-1(3H)-异苯并呋喃酮(7),三棱,P1¯,a = 9.694 (3),b = 10.505 (4),c = 11.163 (4) Å,α = 80.58 (3),β = 80.41 (3),γ = 76.49 (3)°;双[1(3H)-异苯并呋喃酮-3-基]醚 (8),单斜,I2/a,a = 15.31 (2),b = 6.111 (12),c = 28.30 (5) Å,β = 101.61 (12)°。此外,还描述了一种开放的草酸叔酰胺:N-吗啉基 2′-苯甲酰苯甲酰胺 (6):单斜,P21/c,a = 6.844 (4),b = 15.696 (8),c = 14.154 (7) Å,β = 99.43 (4)°。伪酸衍生物形成平面异苯并呋喃环和异吲哚环,前醛/酮碳-杂原子内环和外环键距显示出键长变化,这与所附基团的相对碱性有关。报告了内环和外环氮假酰胺的结构,以及正常假酸酐和二假酸酐的实例。