I2/CH3ONa-Promoted Ring-Opening Alkylation of Benzothiazoles with Dialkyl Carbonates
作者:Jianwei Xie、Ping Liu、Xuezhen Li、Jing He
DOI:10.1055/s-0042-1752356
日期:2023.2
Dialkylcarbonates were used as the green alkylating reagents in the I2-promoted ring-opening alkylation of benzothiazoles. A variety of benzo[d]thiazole derivatives underwent the alkylation smoothly to provide the diverse N-alkyl-N-(o-alkylthio)phenylformamides in moderate to excellent yields. The synthetic utility of this protocol was verified by gram-scale reaction and further derivatization of
在 I 2促进的苯并噻唑的开环烷基化中,碳酸二烷基酯被用作绿色烷基化试剂。多种苯并[ d ]噻唑衍生物顺利烷基化,以中等至优异的产率提供多种N-烷基-N- ( o-烷硫基)苯基甲酰胺。该协议的合成效用通过克级反应和产品的进一步衍生化得到验证。还证明了两个分子的碳酸二烷基酯分别参与形成硫-烷基和氮-烷基的机制。
Shadakshari; Talukdar; Chattopadhyay, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2001, vol. 40, # 10, p. 1007 - 1010