Diastereoselective Synthesis of 4-Sila-3,4,4a,5-tetrahydro-2H-isoquinolin-1-ones through Intramolecular Diels-Alder Reaction of Chiral Silatrienes
作者:Paulo J. Coelho、Luis Blanco
DOI:10.1055/s-2001-16784
日期:——
thyl)methylsilane. The thermal inverse electron demand intra-mo- lecular Diels-Alder reaction of these compounds gave 4-sila- 3,4,4a,5-tetrahydro-2H-isoquinolin-1-ones. Moderate diastereo- selectivity was observed for a silatriene bearing a methyl and a cyclohexyl substituent on the chiral silicon atom. The intermediate tricyclic adduct of this reaction was also isolated.
新的 Si-手性 N-2-silabut-3-enylpyran-2-one-6-carboxamides 由二氯(氯甲基)甲基硅烷分四步制备。这些化合物的热逆电子需求分子内 Diels-Alder 反应产生 4-sila-3,4,4a,5-四氢-2H-isoquinolin-1-ones。对于在手性硅原子上带有甲基和环己基取代基的硅三烯,观察到中等的非对映选择性。该反应的中间体三环加合物也被分离出来。