A one-flask synthesis of dihydronaphthalenemethanols by directed addition of organolithium reagents to BHA naphthalenecarboxylates
作者:Mitsuru Shindo、Kenji Koga、Yasutomi Asano、Kiyoshi Tomioka
DOI:10.1016/s0040-4020(99)00181-7
日期:1999.4
The 1,4-addition reaction of organolithium reagents with 2,6-bis(tert-butyl)-4-methoxyphenyl naphthalenecarboxylates gave regioselectively substituted dihydronaphthalenecarboxylates in high yields. Successive treatment of the esters with organolithiums in THF, lithium triethylborohydride, methyl iodide, and finally sodium borohydride in methanol, provided regio- and stereoselectively the corresponding
有机锂试剂与2,6-双(叔丁基)-4-甲氧基苯基萘羧酸酯的1,4-加成反应以高产率得到区域选择性取代的二氢萘羧酸酯。用四氢呋喃中的有机锂,三乙基硼氢化锂,甲基碘和最后用甲醇中的硼氢化钠连续处理酯类,可以很好地在区域和立体选择性地提供相应的1,1,2-和1,2,2-三取代的二氢萘基甲醇。该一烧瓶法由五个反应序列构成,该五个反应涉及作为关键步骤从烯酮还原性生成醛金属烯醇化物。