作者:Thomas D. Clark、Elizabeth C. Dugan
DOI:10.1055/s-2006-926377
日期:——
This paper describes the synthesis of hexa(ethylene glycol) and carboxymethylhexa(ethylene glycol)-terminated alkanedisulfides 4 and 7, respectively, in which the alkylene chains are twenty-methylenes-long. The key twenty-carbon synthon, 20-bromoicos-1-ene (1), was prepared by homologation of 8-bromooct-1-ene, which was achieved via Cu(II)-catalyzed coupling of the corresponding Grignard reagent with 1,12-dibromododecane. Compounds 4 and 7 are expected to yield self-assembled monolayers (SAMs) that are more stable and well-ordered than those formed by their traditional undecane homologues.
本文描述了六聚乙二醇和羧甲基六聚乙二醇终止的烷基二硫化物4和7的合成,其中烷基链长达二十个亚甲基。关键的二十碳合成单元20-溴二十烯(1)是通过8-溴辛-1-烯的同系物化反应制备的,该反应是通过Cu(II)催化的对应格氏试剂与1,12-二溴十二烷的偶合反应实现的。预计化合物4和7将生成自组装单层(SAMs),其稳定性和有序程度均优于传统的十烷同系物形成的单层。