反应详情

2,3-Dimethoxy-5-methyl-6-(9'-methoxycarbonylnonyl)-1,4-benzoquinone (formula I-2 wherein R=H3CO, n=8, in the form of methyl ester) (1 part) was treated with lithium aluminum hydride in the same manner as Example 53 to give 2,3-dimethoxy-5-methyl-6-(10'-hydroxydecyl)-hydroquinone (formula III-2 wherein R=H3CO, X=Y=OH, n=8, in the free form). The product was treated with ferric chloride in the same manner as Example 53 and then crystallized from ligroin. The procedure provided 2,3-dimethoxy-5-methyl-6-(10'-hydroxydecyl)-1,4-benzoquinone (formula IV-2 wherein R=H3CO, n=8, in the free form) (0.65 part) as orange needles melting at 46°-50° C.