Aldol Condensation versus Conjugate Addition. Intramolecular Cyclization Using a Combination of Lewis Acid and 1,2-Diol.
作者:Satoshi YAMADA、Hiroshi SUEMUNE
DOI:10.1248/cpb.48.1171
日期:——
The reactivity of 3-substituted 4-methyl-4-(3-oxobutyl)-2-cyclohexen-1-ones (1) in the presence of a combination of a Lewis acid and a 1, 2-diol was studied. The results suggest several factors that influence 6-membered ring formation, including two types of intramolecular aldol reaction and intramolecular 1, 4-addition, due to the C3-substituent, Lewis acid, and the presence of diol. In this study, novel methodology to prepare two types of decalin skeleton could be developed.
研究了在路易斯酸和1,2-二醇的组合存在下,3-取代的4-甲基-4-(3-氧基丁基)-2-环己烯-1-酮(1)的反应性。结果表明,影响六元环形成的几个因素,包括由于C3取代基、路易斯酸和二醇的存在而导致的两种类型的分子内醛醇反应和分子内1,4-加成。在本研究中,开发了制备两种类型去氢化萘骨架的新方法。