Preparation and application of (+)-(3,3-dimethyl-2-methylenenorbornan-1-yl)methyl methanesulfonate: a new and versatile chiral fenchone analogue
作者:Te-Fang Yang、Hou-Hsun Chao、Yi-Hsuan Lu、Cheng-Jung Tsai
DOI:10.1016/j.tet.2003.08.066
日期:2003.10
The preparation of (+)-(3,3-dimethyl-2-methylenenorbornan-1-yl)methyl methanesulfonate (9) was carried out in 2 steps, dihydroxylation and mesylation, from (−)-2-methylenebornane. Hydrolysis and reduction of 9 gave a fenchyl alcohol (2) and a methylenefenchone (21), respectively. Oxidation of 9 afforded a new analogue (23) of the class of oxatricyclo compounds. Treatment of 9 with NBS resulted in a
(+)-(3,3-二甲基-2-亚甲基降冰片烷-1-基)甲磺酸甲酯(9)的制备是通过(-)-2-亚甲基冰片烷的二羟基化和甲磺酰化两个步骤进行的。水解和还原9分别得到品醇(2)和亚甲基f酮(21)。9的氧化提供了一个新的类似氧杂三环化合物的类似物(23)。用NBS处理9会导致Wagner-Meerwein重排,从而生成溴化的亚甲基冰片烷衍生物(25和26),它们也是新化合物。