Immobilization of 1,5,7-triazabicyclo [4.4.0] dec-5-ene over mesoporous materials: An efficient catalyst for Michael-addition reactions under solvent-free condition
作者:Pranjal Kalita、Rajiv Kumar
DOI:10.1016/j.apcata.2011.03.010
日期:2011.4
Immobilization of 1,5,7-triazabicyclo [4.4.0] dec-5-ene (TBD, a bicylic guanidine base) over mesoporous material like SBA-15 has been found to be an excellent catalyst for Michael-addition of β-nitro styrene with malonate. The reactions were performed under solvent-free condition at 373 K for 9 h. A wide variety of Michael donors and acceptors were investigated. Among them, high yield of Michael product
已发现将1,5,7-三氮杂双环[4.4.0]癸-5-烯(TBD,双环胍碱)固定在诸如SBA-15的中孔材料上,是迈克尔加成β-硝基的极佳催化剂苯乙烯与丙二酸酯。反应在无溶剂条件下于373 K下进行9 h。对迈克尔的各种供体和受体进行了调查。其中,对-氯-硝基苯乙烯与丙二酸二甲酯之间的反应获得了高产率的迈克尔产物。