作者:Ioannis D. Kostas、Gert-Jan M. Gruter、Otto S. Akkerman、Friedrich Bickelhaupt、Huub Kooijman、Wilberth J. J. Smeets、Anthony L. Spek
DOI:10.1021/om960431j
日期:1996.10.15
Functionalized analogues of this crown ether have not been reported previously. X-ray crystal structures of 6, 7, and 10 were determined. According to the crystal structure of 6, the carboxylic substituent takes part in intramolecular hydrogen bonding with a transannular crown ether oxygen (O(8)). The crystal structure of 7 is the first one for a bis(crown ether)tin(IV) compound and reveals close proximity
1,3-Phenylene-16-crown-5(1)在环内2位被正丁基锂选择性地和定量地锂化,使得该系统的功能化比1,3-亚二甲苯基冠醚的功能化更容易。锂化产生相应的(2-硫代-1,3-亚苯基)-16-冠-5(2),而聚醚环不断裂。随后与氧化氘,二甲基二硫,碘,二氧化碳,二氯化二甲基锡(0.5摩尔当量),二溴化汞(0.5摩尔当量),苄基溴和二溴化镁反应,生成(2-氘-1,3-苯)-16 -冠-5(3),[2-(甲硫基)-1,3-亚苯基] -16-冠-5(4),(2-碘-1,3-亚苯基)-16-冠-5(5),(2-羧基-1,3-亚苯基)-16-冠-5(6),二甲基双[((1,3-亚苯基-16-冠-5)-2-基]锡烷(7),双[ (1,3-亚苯基-16-冠-5)-2-基]汞(8),2-苄基-1,3-亚苯基-16-冠-5(9)和[2-(溴镁)- 1,3-亚苯基] -16-冠-5(10)。该冠醚