Fittig; Frost, Justus Liebigs Annalen der Chemie, 1884, vol. 226, p. 372
作者:Fittig、Frost
DOI:——
日期:——
Roser, Justus Liebigs Annalen der Chemie, 1883, vol. 220, p. 255
作者:Roser
DOI:——
日期:——
III.—The action of Beckmann's mixture on some monocyclic terpenes. Part II. Terpinolene and “origanene.”
作者:Thomas Anderson Henry、Humphrey Paget
DOI:10.1039/jr9310000025
日期:——
Lactone Carboxylic Acids. VII. Reaction of Lactone Pyrazolines with Acetic Anhydride. A Preparation of Lignans Skeleton by Thermal Decomposition of Pyrazoline
作者:Sigeru Torii、Takuya Furuta
DOI:10.1246/bcsj.43.2544
日期:1970.8
Cycloaddition of diazomethanes to aconic acids (4 and 14) gave 1-pyrazolines (5, 7 and 15). Thermal decomposition of 7 afforded γ-phenyl-α-benzylaconic acid 8 having a lignans skeleton. By the action of phosphoric acid 5 was converted into 2-pyrazoline 12. The chemical nature of pyrazolines (5 and 12) is discriminated by treatment with acetic anhydride in the presence of p-toluenesulfonic acid. Thus