Polystyrene resin supported palladium(0) (Pd@PR) nanocomposite mediated regioselective synthesis of 4-aryl-1-alkyl/(2-haloalkyl)-1H-1,2,3-triazoles and their N-vinyl triazole derivatives from terminal alkynes
作者:Arun K. Shil、Sandeep Kumar、Saurabh Sharma、Abha Chaudhary、Pralay Das
DOI:10.1039/c4ra15133j
日期:——
building blocks for polymers) which are further utilized in the synthesis of 4-aryl-1-(2-arylalkenyl)-1H-1,2,3-triazoles following a Pd@PR catalyzed Heck coupling approach. Furthermore, microwave assisted one pot dehydrochlorination and Heck strategy was adopted to afford 4-phenyl-1-styryl-1H-1,2,3-triazole under Pd@PR catalyzed conditions using iodobenzene as a phenylating agent.
已开发出一种有效的通用方法,用于一锅法合成的聚苯乙烯树脂负载的钯(0)(Pd @ PR)纳米复合材料(异质)影响4-芳基-1-烷基-1 H -1,2,3-三唑的顺序一锅法合成催化剂。本工作特别强调了通过1,2-二卤乙烷的选择性单叠氮化和随后的Pd @ PR介导的1的4-芳基-1-(2-卤代烷基)-1 H -1,2,3-三唑的合成。与末端芳基炔烃的3-偶极环加成。碳酸钾促进了合成的4-芳基-1-(2-卤代烷基)-1 H -1,2,3-三唑的脱卤化氢反应,得到相应的N-乙烯基衍生物(通常用作聚合物的结构单元),进一步用于合成4-芳基-1-(2-芳基烯基)-1的合成在Pd @ PR催化的Heck偶合方法后生成H -1,2,3-三唑。此外,微波辅助一锅脱氯化氢,采用Heck策略,在碘化苯作为苯基化剂的Pd @ PR催化条件下,得到4-苯基-1-苯乙烯基-1 H -1,2,3-三唑。