Facile, efficient and eco-friendly synthesis of 5-sulfenyl tetrazole derivatives of indoles and pyrroles
作者:Bruna L. Kuhn、Margiani P. Fortes、Teodoro S. Kaufman、Claudio C. Silveira
DOI:10.1016/j.tetlet.2014.01.101
日期:2014.2
A concise, two-step eco-friendly approach towards the synthesis of 5-sulfenyl tetrazole derivatives of indoles and pyrroles, is reported. The synthesis comprises the oxone-mediated thiocyanation of the starting heterocycles towards intermediate 3-thiocyanato indoles and 2-thiocyanato pyrroles, and their subsequent treatment with sodium azide in 2-propanol/water under zinc bromide promotion.
报道了一种简单的两步环保方法,用于合成吲哚和吡咯的5-亚磺酰基四唑衍生物。合成过程包括起始杂环向中间体3-硫氰酸根吲哚和2-硫氰酸根吡咯的酮介导的硫氰化作用,以及在溴化锌促进下,在2-丙醇/水中用叠氮化钠进行随后的处理。