2-reduction of spiro[4,4]nonane-2,7-diene-1,6-dione gave a rans-alcohol as a first product which reacted further to the corresponding cis,trans-diol. Pd(II)-catalysis was used to effect an allylic rearrangement from the 1,6-diacetate to the corresponding 2,7-diacetate. Both diacetates were substrates for Pd(0)-catalyzed allylic alkylations. The relative stereochemistry was retained.
螺[4,4]
壬烷-2,7-二烯-1,6-二酮的两步1,2-还原得到作为第一产物的兰斯-醇,其进一步与相应的顺式,反式
-二醇反应。Pd(II)催化用于实现从1,6-二
乙酸酯到相应的2,7-二
乙酸酯的烯丙基重排。两种双
乙酸盐都是Pd(0)催化的烯丙基烷基化的底物。保留了相对的立体
化学。