Synthesis and structures of six closely related <i>N</i>-[3-(2-chlorobenzoyl)-5-ethylthiophen-2-yl]arylamides, together with an isolated reaction intermediate: order <i>versus</i> disorder, molecular conformations and hydrogen bonding in zero, one and two dimensions
作者:Belakavadi K. Sagar、Hemmige S. Yathirajan、Ravindranath S. Rathore、Christopher Glidewell
DOI:10.1107/s2053229618000657
日期:2018.2.1
Six closely related N‐[3‐(2‐chlorobenzoyl)‐5‐ethylthiophen‐2‐yl]arylamides have been synthesized and structurally characterized, together with a representative reaction intermediate. In each of N‐[3‐(2‐chlorobenzoyl)‐5‐ethylthiophen‐2‐yl]benzamide, C20H16ClNO2S, (I), N‐[3‐(2‐chlorobenzoyl)‐5‐ethylthiophen‐2‐yl]‐4‐phenylbenzamide, C26H20ClNO2S, (II), and 2‐bromo‐N‐[3‐(2‐chlorobenzoyl)‐5‐ethylthiophen‐2‐yl]benzamide
合成了六种密切相关的N- [3-(2-氯苯甲酰基)-5-乙基噻吩-2-基]芳基酰胺,并与代表性的反应中间体进行了结构表征。在每个N- [3-(2-氯苯甲酰基)-5-乙基噻吩-2-基]苯甲酰胺中,C 20 H 16 ClNO 2 S,(I),N- [3-(2-氯苯甲酰基)-5-乙基噻吩[-2-基] -4-苯基苯甲酰胺,C 26 H 20 ClNO 2 S,(II)和2-溴-N- [3-(2-氯苯甲酰基)-5-乙基噻吩-2-基]苯甲酰胺,C 20氢15 BrClNO 2S,(III),分子在两组原子位点上无序,在(I)中占0.894(8)和0.106(8),在(II)中占0.832(5)和0.168(5),以及0.7006 (III)中的(12)和0.2994(12)。在每个N- [3-(2-氯苯甲酰基)-5-乙基噻吩-2-基] -2-碘苯甲酰胺中,C 20 H 15 ClINO 2 S,(IV)和N-