- 作者: 王志偉 ; 劉文宗
- 作者服務機構: 中山大學化學系
- 中文摘要: The reactions of sterically hindered tricarbonyl(cyclohexadienylium)-iron with nucleophilic reagents have been studied. The influence of the 4-alkoxyl substituents versus the bulkiness of the 1-alkyl substituents on the regioselectivity of nucleophilic addition was investigated. With sodium borohydride as nucleophile, substantial addition at the C-1 dienylium terminus was observed to take place via the more crowded endo face to give the more stable exo product. We here report the importance of steric hindrance to the approach of nucleophiles versus product stability during nucleophilic addition to the dienylium complexes.
- 英文摘要: --
- 中文關鍵字: Steric Hindrance; Cyclohexadienyl-Iron Complex; Iron; Regioselectivity; Endo Attack; Product Stability; Nucleophilic Addition
- 英文關鍵字: 空間障礙;環己二烯基鐵錯合物;選擇性;產物穩定度;親核加成