Chitosan–silica sulfate nanohybrid: a highly efficient and green heterogeneous nanocatalyst for the regioselective synthesis of N-alkyl purine, pyrimidine and related N-heterocycles via presilylated method
作者:Somayeh Behrouz、Mohammad Navid Soltani Rad、Mohammad Amin Piltan
DOI:10.1007/s11696-019-00863-1
日期:2020.1
pyrimidine nucleobases as well as other related N-heterocycles with HMDS utilizing chitosan–silica sulfate nanohybrid (CSSNH) is described. CSSNH is proved to be a useful, highly efficient and eco-friendly heterogeneous nanohybrid catalyst for silylation of nucleobases. The presilylated nucleobases then underwent the reaction with different sources of carbon electrophiles to afford the desired N-alkyl-substituted
摘要描述了利用壳聚糖-硫酸硅纳米杂化物(CSSNH)用HMDS对嘌呤和嘧啶核苷碱基以及其他相关的N-杂环进行甲硅烷基化。事实证明,CSSNH是一种有用,高效且生态友好的异质纳米杂化催化剂,可用于核碱基的甲硅烷基化。然后使预甲硅烷基化的核碱基与不同来源的碳亲电试剂反应,以良好至优异的产率得到所需的N-烷基取代的衍生物。CSSNH展示了一些优势,包括易于处理和准备,低成本,可重复使用性以及对环境的友好性。这些独特的特性使CSSNH成为绿色工业过程中的理想选择。 图形摘要