作者:J. Camps、J. Font、P. de March
DOI:10.1016/s0040-4020(01)88908-0
日期:1981.1
dimethyl-phosphonate of (E)-5-bromo-3-penten-2-one ethylene ketal, 6 and 7, is described. These C5-isoprenoid synthons were condensed with several aldehydes and ketones giving mixtures of the corresponding E and Z-olefination products. Reaction of the anion of the phosphonate derivative with β-ionone gave 9-cis and 9-trans-β-C18-tetraenone ketals, 13 and 14, which by subsequent hydrolysis afforded
描述了(E)-5-溴-3-戊烯-2-一乙烯缩酮6和7的phospho盐和二甲基膦酸酯的制备。将这些C 5-异戊二烯基合成子与几种醛和酮缩合,得到相应的E和Z-烯烃化产物的混合物。与β紫罗兰酮膦酸酯衍生物的阴离子的反应,得到9-顺式和9-反式-β-C 18个-tetraenone缩酮,13和14,其通过随后的水解,得到9-顺式和9- TRAS -β-C 18-丁烯酮15和16。还描述了AC 8-异戊二烯酸合成子。