Oxidative and hydrolytic cleavage of cyclopropane and spirocyclobutane derivatives of 6,8-dioxabicyclo[3.2.1]octane, the products of transformation of levoglucosenone
作者:R. A. Novikov、R. R. Rafikov、E. V. Shulishov、Yu. V. Tomilov
DOI:10.1007/s11172-010-0336-4
日期:2010.10
-olide, has been suggested based on oxidation of (1S,2S,4R,6R)-7,9-dioxatricyclo[4.2.1.02,4]nonan-5-one. Oxidation of cyclobutanones, spirojoined with the fragments of 6,8-dioxabicyclo[3.2.1]oct-2-ene, 6,8-dioxabicyclo[3.2.1]octane (at position 4), or 7,9-dioxatricyclo[4.2.1.02,4]nonane (at position 5), upon the action of m-chloroperoxybenzoic acid or the KMnO4-H2SO4-H2O system leads to the corresponding
一种合成 (1R,4S,5S)-4-hydroxymethyl-3-oxabicyclo[3.1.0]hexan2-one,(S)-5-hydroxypent-2-en-4-olide 的环丙烷类似物的新方法, 已建议基于 (1S,2S,4R,6R)-7,9-二氧杂三环 [4.2.1.02,4]nonan-5-one 的氧化。环丁酮的氧化,与 6,8-二氧杂双环 [3.2.1] oct-2-ene、6,8-二氧杂双环 [3.2.1] 辛烷(4 位)或 7,9-二氧杂三环 [4.2] 的碎片螺连接.1.02,4]壬烷(在第 5 位),在间氯过苯甲酸或 KMnO4-H2SO4-H2O 系统的作用下,以 73-85% 的产率生成相应的螺连丁醇内酯。同样的环丁酮在 50–90 °C 的稀硫酸作用下很容易发生四元环开环,形成 6,8-二氧杂双环[3.2.1]辛烷-4-或 7,9-二氧杂三环 [4