Hydrogen Peroxide-Mediated Rapid Room Temperature Metal-Free C(sp<sup>2</sup>)-H Thiocyanation of Amino Pyrazoles, Amino Uracils, and Enamines
作者:Danish Ali、Anoop Kumar Panday、Lokman H. Choudhury
DOI:10.1021/acs.joc.0c01738
日期:2020.11.6
aminopyrazoles, aminoisoxazole, aminoisothiazole, amino uracils, and aliphatic enamines has been developed in an aqueous medium using hydrogen peroxide as a benign oxidant and ammonium thiocyanate as a thiocyanating agent. On the other hand, the reaction of hydrogen peroxide and ammonium thiocyanate followed by one-pot addition of NaOH provides the corresponding disulfides in the case of amino azoles, and
已经开发了一种在水性介质中使用过氧化氢作为良性氧化剂和硫氰酸铵对氨基吡唑,氨基异恶唑,氨基异噻唑,氨基尿嘧啶和脂肪族烯胺进行C(sp 2)-H硫氰化的快速无金属室温室温方法作为硫氰化剂。另一方面,在氨基唑的情况下,过氧化氢和硫氰酸铵的反应,然后一锅加NaOH,提供了相应的二硫化物;在氨基尿嘧啶的情况下,观察到了嘧啶稠合的2-氨基噻唑。该方法的显着特征是使用了环保型氧化剂,反应可调性以获取不同的产品,广泛的底物范围以及良好的产率。