DNA-cellulose: an economical, fully recyclable and highly effective chiral biomaterial for asymmetric catalysis
作者:Erica Benedetti、Nicolas Duchemin、Lucas Bethge、Stefan Vonhoff、Sven Klussmann、Jean-Jacques Vasseur、Janine Cossy、Michael Smietana、Stellios Arseniyadis
DOI:10.1039/c4cc10190a
日期:——
The challenge in DNA-based asymmetric catalysis is to perform a reaction in the vicinity of the helix by incorporating a small-molecule catalyst anchored to the DNA in a covalent, dative, or non-covalent yet stable fashion in order to ensure high levels of enantio-discrimination. Here, we report the first generation of a DNA-based catalyst bound to a cellulose matrix. The chiral biomaterial is commercially
基于DNA的不对称催化的挑战是通过以共价,定性或非共价但稳定的方式掺入锚定在DNA上的小分子催化剂来在螺旋附近进行反应,以确保高水平的歧视。在这里,我们报道了第一代结合到纤维素基质上的基于DNA的催化剂。手性生物材料是可商购的,使用起来很简单,可以完全回收利用,并且在各种Cu(II)催化的不对称反应(包括Friedel-Crafts烷基化反应和Michael加成反应)中产生高水平的对映选择性。还报道了单程连续流工艺,该工艺在低催化剂负载下提供了快速转化和高对映选择性,从而为基于DNA的不对称催化领域提供了新的基准。