Pd/BIPHEPHOS is an Efficient Catalyst for the Pd‐Catalyzed
<i>S</i>
‐Allylation of Thiols with High
<i>n</i>
‐Selectivity
作者:Thomas Schlatzer、Hilmar Schröder、Melanie Trobe、Christian Lembacher‐Fadum、Simon Stangl、Christoph Schlögl、Hansjörg Weber、Rolf Breinbauer
DOI:10.1002/adsc.201901250
日期:2020.1.23
of thiols with stable allylcarbonate and allylacetate reagents offers several advantages over established reactions for the formation of thioethers. We could demonstrate that Pd/BIPHEPHOS is a catalyst system which allows the transition metal-catalyzed S-allylation of thiols with excellent n-regioselectivity. Mechanistic studies showed that this reaction is reversible under the applied reaction conditions
与已建立的硫醚形成反应相比,Pd 催化的硫醇与稳定的碳酸烯丙酯和乙酸烯丙酯试剂的 S-烯丙基化具有多种优点。我们可以证明 Pd/BIPHEPHOS 是一种催化剂体系,可以实现过渡金属催化的硫醇 S-烯丙基化,具有优异的 n-区域选择性。机理研究表明该反应在所应用的反应条件下是可逆的。这种转化具有出色的官能团耐受性,可用于多种硫醇亲核试剂(18 个实例)和烯丙基底物(9 个实例),甚至可以应用于头孢菌素的后期多样化,这可能会在合成中得到应用新抗生素。