Studies on terpenes. Part I. Rearrangement of 7-oxatricyclo[4,3,0,0]nonanes into 8-substituted 1,3,3-trimethylnorbornane derivatives
作者:N. Bosworth、P. D. Magnus
DOI:10.1039/p19720000943
日期:——
9-Methyl-6-p-tolyl-(III; R = C6H4Me-p) and 6,9-dimethyl-7-oxatricyclo[4,3,0,0]nonane (III; R = Me) are readily rearranged into 8-substituted 1,3,3-trimethylnorbornan-2α-ols by treatment with boron trifluoride–ether. 9-Methyl-7-oxatricyclo[4,3,0,0]nonane (III; R = H) is rearranged (BF3–OEt2) to a mixture of endo-3α-acetoxymethyl-3-methylnorbornan-2α-yl acetate (VIII; R = Ac) and exo-7-acetoxymethyl
9-甲基-6-对甲苯基- (III; R = C 6 H 4 Me- p)和6,9-二甲基-7-氧杂三环[4,3,0,0]壬烷(III; R = Me)通过用三氟化硼-醚处理,可以很容易地将它们重新排列成8-取代的1,3,3-三甲基降冰片烷-2α-醇。9-甲基-7-氧杂三环[4,3,0,0]壬烷(III; R = H)重新整理(BF 3 -OEt 2)到的混合物内-3α乙酰氧基-3- methylnorbornan-2α基乙酸(VIII; R = Ac)和外-7-乙酰氧基甲基-7-甲基降冰片烷-2β-乙酸乙酸酯(IX; R = Ac)。