-
Cyclizations versus rearrangements in the reactions of some epoxyolefins with Lewis acids†
作者:Lars Pettersson、Torbjörn Frejd
DOI:10.1039/b010101j
日期:——
Treatment of various substituted epoxyolefins A: with BF3·OEt2 and other reagents that could be expected to induce carbocyclization to give cyclohexanes was investigated. It turned out that the general reaction of these systems was the epoxide to ketone rearrangement, while the carbocyclization was only a rare event. Only substrates carrying the allylsilane grouping underwent carbocyclization and in addition the protecting groups and the stereochemistry of the system had a decisive influence on whether ring closure or rearrangement were to take place.
对各种取代环
氧烯烃A与
BF3·OEt2及其他可能诱导
碳环化反应生成
环己烷的试剂进行了研究。结果表明,这些体系的一般反应是
环氧化物转变为
酮的重排,而
碳环化仅是一个罕见事件。只有携带
烯丙基
硅烷基团的底物经历了
碳环化,此外,保护基团和体系的立体
化学对环闭合或重排的发生有决定性影响。
-
Pettersson, Lars; Magnusson, Goeran; Frejd, Torbjoern, Acta Chemica Scandinavica, 1993, vol. 47, # 2, p. 196 - 207
作者:Pettersson, Lars、Magnusson, Goeran、Frejd, Torbjoern
DOI:——
日期:——
-
FREJD, TORBJORN;MAGNUSSON, GORAN;PETTERSON, LARS, CHEM. SCR., 27,(1987) N 4, 561-562
作者:FREJD, TORBJORN、MAGNUSSON, GORAN、PETTERSON, LARS
DOI:——
日期:——
-
PETTERSSON, L.;FREJD, T.;MAGNUSSON, G., TETRAHEDRON LETT., 28,(1987) N 24, 2753-2756
作者:PETTERSSON, L.、FREJD, T.、MAGNUSSON, G.
DOI:——
日期:——