作者:Hajime Watanabe、Jun Katsuhara、Noriyuki Yamamoto
DOI:10.1246/bcsj.44.1328
日期:1971.5
The rearrangement of (+)-cis- (I) and (−)-trans-pulegone oxide (II) was effected by the catalysis of zinc bromide in boiling benzene to give the same (−)-2,2,5-trimethylcyclohepta-1,3-dione (III), with a retention of the optical activity. The structure of (−)-III with the expanded 7-membered ring was confirmed by the chemical transformation into 1,1,4-trimethyl-cycloheptane(IV), which was identical
(+)-cis- (I) 和 (-)-trans-pulegone oxide (II) 的重排是通过溴化锌在沸腾苯中的催化作用得到相同的 (-)-2,2,5-trimethylcyclohepta -1,3-二酮 (III),保留了旋光性。通过化学转化为 1,1,4-三甲基-环庚烷 (IV) 证实了 (-)-III 具有扩展的 7 元环的结构,这与衍生自丁香酮 (V) 的相同。胡椒酮氧化物 (VIII) 也以与胡薄荷酮氧化物相同的方式转化为二酚 (X)。