Biologicalapplications increasingly demand tailored surfaces with a range of functional groups. Herein we describe a straightforward and inexpensive method based exclusively on solid-phasesynthesis for the preparation of a variety of customized alkanethiols (ATs). The technique overcomes all the difficulties encountered during the preparation of these molecules in solution. The procedure allows the
生物应用越来越需要具有一系列功能组的定制表面。在此,我们描述了一种直接且廉价的方法,该方法完全基于固相合成,用于制备各种定制的烷硫醇 (AT)。该技术克服了在溶液中制备这些分子过程中遇到的所有困难。该过程允许使用 AT 无需进一步纯化,用于在金上制备自组装单层,通常用于在该表面实现官能团多样性。
Stille Coupling Involving Bulky Groups Feasible with Gold Cocatalyst
作者:Juan delPozo、Desirée Carrasco、Mónica H. Pérez-Temprano、Max García-Melchor、Rosana Álvarez、Juan A. Casares、Pablo Espinet
DOI:10.1002/anie.201209262
日期:2013.2.18
Gold shuttle: Bulkygroups, which will not (or only very sluggishly) undergo Stillecoupling with stannanes and inexpensive ligands, can be efficiently coupled using bimetallic catalysis. A goldcocatalyst serves as an efficient shuttle to convey the bulkygroup from tin to palladium by reducing the steric crowding in the transition‐states (see scheme).