Facial Selectivity in the Addition of Lithium Dimethylcuprate to 6-Substituted Tricyclo[5.2.1.02,6]deca-4,8-dienones. Synthesis of β-Substituted Cyclopentenones Using Flash Vacuum Thermolysis
作者:Antonius J. H. Klunder、Andries A. Volkers、Binne Zwanenburg
DOI:10.1071/ch14094
日期:——
investigated. It was shown that substituents at the 6-position can either exert a steric effect or an electronic effect. Steric approach control predominantly giving the endo product was observed for 6-alkyl substituents. Stereoelectronic control could be adequately rationalised using the Cieplak model. Flash vacuum thermolysis was used to prepare a series of β-substituted cyclopentenoids. The sequence leading
研究了向二取代的三环[5.2.1.0 2,6 ] deca-4,8-二烯酮进行亲核加成的过程中,对二甲基cup酸锂和二正戊cup酸锂进行亲核加成反应的立体选择性。已经表明,在6-位的取代基可以发挥空间效应或电子效应。空间位阻的方法控制主要赋予内切产物观察到1-6 -烷基取代基。可以使用Cieplak模型充分合理地控制立体电子控制。闪蒸真空热解用于制备一系列β-取代的环戊烯。产生环戊烯类的序列具有有吸引力的范围。