The constitution of the dimers of 4,6-di-t-butyl-3-hydroxy-o-benzoquinone and 5-t-butyl-3-hydroxy-o-benzoquinone
作者:N. M. Waldron
DOI:10.1039/j39680001914
日期:——
Evidence is presented which shows that the yellow and white dimers of 4,6-di-t-butyl-3-hydroxy-o-benzoquinone are structures 3,4a,6,8-tetra-t-butyl-4a, 10a-dihydro-9,10a-dihydroxydibenzo-p-dioxin-1,2-dione (II) and 2,3a,5,7-tetra-t-butyl-3a,10a-dihydro-8,10a-dihydroxybenzo[b]cyclopenta[f][1,4]dioxepin-1,10-dione (IV), respectively. The suggested position of substitution of the t-butyl group in 5-t-butylpyrogallol
提出的证据表明4,6-二叔丁基-3-羟基-邻苯醌的黄色和白色二聚体是结构3,4a,6,8-四叔丁基-4a,10a-二氢-9,10a-二羟基二苯并-对二恶英-1,2-二酮(II)和2,3a,5,7-四叔丁基-3a,10a-二氢-8,10a-二羟基苯并[ b ]环戊[分别为f ] [1,4] dioxepin-1,10-dione(IV)。已经证实了叔丁基在5-叔丁基邻苯三酚中的取代位置,从而确定了5-叔丁基-3-羟基-邻苯醌的二聚体为5,10-二叔丁基- 2,7-二羟基三环-[5,3,1,1 2,6] dodeca-4,9-二烯-3,8,11,12-四酮(XIII)。在制备5-叔丁基间苯三酚中,使用了新的反应序列以原位连接叔丁基。