Reactivity of electrogenerated thiocyanogen in the thiocyanation of pyrazolo[1,5-a]pyrimidines
作者:Vladimir A. Kokorekin、Rauza R. Yaubasarova、Sergei V. Neverov、Vladimir A. Petrosyan
DOI:10.1016/j.mencom.2016.09.016
日期:2016.9
Selective thiocyanation (yield 70–90%) at the 3-position of pyrazolo[1,5- a ]pyrimidines was performed with thiocyanogen electrochemically generated in situ from NH 4 SCN in MeCN on a Pt anode. For substrates with higher oxidation potential addition of Lewis acids was necessary.
Electrooxidative C-H Functionalization of Heteroarenes. Thiocyanation of Pyrazolo[1,5-<i>a</i>
]pyrimidines
作者:Vladimir A. Kokorekin、Rauza R. Yaubasarova、Sergei V. Neverov、Vladimir A. Petrosyan
DOI:10.1002/ejoc.201900390
日期:2019.7.14
An effective system of approaches to electrooxidative C–H thiocyanation of both high and low reactive pyrazolo[1,5‐a]pyrimidines under mild conditions has been proposed for the first time. The process scaling up, the antifungal activity of resulting thiocyanates, and possibility of their transformation into thiols also demonstrate advantages and viability of this direct C–S coupling strategy. In general
首次提出了在温和条件下有效反应高和低反应性吡唑并[1,5- a ]嘧啶的C–H硫氰化方法的有效体系。规模扩大的过程,所得硫氰酸盐的抗真菌活性以及将其转化为硫醇的可能性也证明了这种直接C-S偶联策略的优势和可行性。通常,温和的反应条件和高的C–S键形成效率使这种基于吡唑并[1,5- a ]嘧啶的电氧化C–H硫氰化的策略在未来的应用中非常可行。