AN EFFICIENT REGIO- AND STEREOSPECIFIC ALKENYLATION OF PHENOLIC ETHERS BY PRENYL AND GERANYL DIISOPROPYL PHOSPHATES
作者:Shuki Araki、Shin-ichi Manabe、Yasuo Butsugan
DOI:10.1246/cl.1982.797
日期:1982.6.5
Prenyl and geranyl diisopropyl phosphates readily alkenylate a variety of phenolic ethers regio- and stereospecifically without any appreciable side reactions.
异戊二烯基和香叶基二异丙基磷酸酯很容易使各种酚醚区域和立体特异性地烯基化,而没有任何明显的副反应。
Prenylation of olefins in nitromethane
作者:M. Julia、C. Schmitz
DOI:10.1016/0040-4020(86)80012-6
日期:1986.1
The prenylation of isopentenyl and 3,3-dimethylallyl derivatives could be achieved effeciently with dimethyl, vinyl carbinol and a variety of acids in nitromethane. Geraniol and isopentenylacetate led to farnesyl derivatives.
Microwave-assisted Efficient Synthesis of Alliodorin and (±)-Curcuhydroquinone
作者:Goverdhan L. Kad、Anupam Khurana、Vasundhara Singh、Jasvinder Singh
DOI:10.1039/a808057g
日期:——
Terpenoids 1 and 2 have been synthesized from readily available starting materials using Li2CuCl4-catalysed coupling of Grignard reagents with alkyl/aryl bromides and microwave-assisted oxidation of allylic methyl groups, using SeO2/ButOOH adsorbed over SiO2 as key steps.
Acid-catalysed intramolecular cyclization of geranyl hydroquinone derivatives from Cordia alliodora. X-Ray crystal and molecular structure of 1,2,3,3a,4,9,10,10a-octahydro-5,8-dimethoxy-3,10-dimethyl-3a,9-epoxybenz[f]azulene
作者:Gary D. Manners、Rosalind Y. Wong
DOI:10.1039/p19810001849
日期:——
The aqueous acid-catalysed intramolecular cyclization of dimethylated alliodorin (2) obtained from the heartwood of Cordia alliodora has been characterized by X-ray analysis as the unusual tetracyclic di-O-methyl hydroquinone title compound (8). A new synthesis of di-O-methylalliodorin (2) from a terminal methylallylic sulphide derivative of 2-geranyl-1,4-dimethoxybenzene is described.