【摘要】 建立了一种合成巨豆二烯二酮的方法,摩尔百分比5%的高氯酸锰在8～15倍量(摩尔比)吡唑的存在下,以叔丁基过氧化氢为氧化剂,可催化氧化α-紫罗兰酮和β-紫罗兰酮分子结构中的环己烯烯丙位,合成香味化合物4,7E-巨豆二烯-3,9-二酮和5,7E-巨豆二烯-4,9-二酮,产率分别是65%和45%。更多还原

【Abstract】 A method for the synthesis of megastigmadien-diones has been established,and Manganese(II)perchlorate hexahydrate in conjunction with 8～15 times(mole ratio)pyrazole,using tert-butyl hydroperoxide as oxidant,have catalyzed the formation of 4,7E-megastigmadien-3,9-dione and 5,7E-megastigmadien-4,9-dione,a class of tobacco flavoring substances,in 65% and 45% yield,respectively,by the allylic oxidation of cyclohexene moiety of α-ionone and β-ionone.更多还原