Kationische cyclisierung von (Z)-und (E)-1,3-dimethyl-2-(3-hexenyl)-2-cyclohexenol
作者:E.-J. Brunke、F.-J. Hammerschmidt、H. Struwe
DOI:10.1016/s0040-4039(01)92475-x
日期:——
The cationic cyclization of the carbinol 3a(Z) occurred stereoselectively and resulted in a mixture of the hydrindane 4a and the octalin 5a, both with trans-configuration of side chain and angular methyl group. Cyclization of 3b(E) yielded in 4b and 5b, both with cis-configuration. The structure of 4a,5a was proved by transformation to the diketones 8,9.
甲醇3a(Z)的阳离子环化是立体选择性地发生的,并导致形成了具有侧链和甲基甲基反式构型的氢化茚4a和辛醇5a的混合物。3b(E)的环化分别在4b和5b中产生,均具有顺式构型。通过转化成二酮8,9证明了4a,5a的结构。