Synthesis and reactivity of some 8-substituted tricyclo[3.2.1.02,4]octane derivatives
作者:J. Haywood-Farmer、R.E. Pincock、J.I. Wells
DOI:10.1016/s0040-4020(01)82119-0
日期:1966.1
Cyclopropyl formation by addition of methylene units (derived from the cuprous chloride catalyzed decomposition of diazomethane) to 7-norbornadienyl acetate occurs with predominate exo addition to the double bond nearer the acetate function. The products are exo- and endo-syn-tricyclo[3.2.1.02,4]octen-6-yl 8-acetates (VII and VIII) in the ratio 5 to 1. Reduction of these monoadducts gave exo and endo-syn-tricyclo[3
环丙基形成通过加入亚甲基单元(从重氮甲烷的氯化亚铜催化分解得到的)至7-降冰片二烯基乙酸酯与占主导地位的发生外切除双键较接近醋酸功能。产物是外-和内-顺式-三环[3.2.1.0 2,4 ]辛烯基6-乙酸8-酯(VII和VIII),其比例为5:1。还原这些单加合物得到外和-内-顺式-三环[3.2.1.0 2,4 ] octan-8-ols(XIII和XIV)。CuCl-CH 2 N 2与7,7-二甲氧基降冰片烯的反应仅给出了exo异构体(XV),其通过水解和还原转化为外合成醇XIII。的p的-bromobenzenesulfonate酯外-抗-三环[3.2.1.0 2,4 ]辛烷-8-醇后行乙酰解在206°为8的速率常数·0×10 -5秒-1,表明外切-在该环系统中,环丙基对溶剂分解活性的影响很小。