Synthesis of dihydroactiniolide [5,6,7,7a-tetrahydro-4,4,7a-trimethylbenzofuran-2(4H)-one] and 6,7,8,8a-tetrahydro-5,5,8a-trimethylnaphthalene-1,3(5H)-dione from 6,7,8,8a-tetrahydro-2,5,5,8a-tetramethyl-5H-chromen
作者:Shigeru Kurata、Takenori Kusumi、Yoshinobu Inouye、Hiroshi Kakisawa
DOI:10.1039/p19760000532
日期:——
Autoxidation of 6,7,8,8a-tetrahydro-2,5,5,8a-tetramethyl-5H-chromen (2), obtained by photolysis of β-ionone, afforded a mixture of dihydroactiniolide (4), a cyclohexylideneacetaldehyde (5), and 3,5,6,7,8,8a-hexahydro-2,5,5,8a-tetramethyl-2H-chromen-2,3-diol (6). By refluxing in benzene, compound (6) was converted into a hexahydroindenone (15), which, in several steps, afforded 6,7,8,8a-tetrahydro-5
通过β-紫罗兰酮的光解作用自动氧化6,7,8,8a-四氢-2,5,5,8a-四甲基-5 H-铬烯(2),得到二氢放线碘化物(4),环己叉基乙醛( 5),和3,5,6,7,8,8a-六氢-2,5,5,8a-四甲基-2 H -chromen-2,3-二醇(6)。通过在苯中回流,将化合物(6)转化为六氢茚酮(15),在几个步骤中,得到6,7,8,8a-四氢-5,5,8a-三甲基萘-1,3(5 H) -二酮(20)。