作者:Rufine Akué-Gédu、Hayate El-Hafidi、Benoît Rigo、Daniel Couturier
DOI:10.1002/jhet.5570430217
日期:2006.3
alkylation of Meldrum's acid with acetaldehyde can give, depending on the experimental conditions, either a new dimer (5-[3-(2,2-dimethyl-4,6-dioxo-1,3-dioxan-5-yl)butyl]-2,2-dimethyl-1,3-dioxane-4,6-dione) or ethyl Meldrum's acid (2,2-dimethyl-1,3-dioxane-4,6-dione). A best way to obtain this latter product is synthesis of 1-ethoxyethylidene Meldrum's acid from reaction of Meldrum's acid with triethyl
根据实验条件,用乙醛对梅德鲁姆酸进行还原性烷基化反应,可以得到新的二聚体(5- [3-(2,2-二甲基-4,6-二氧代-1,3-二氧六环-5-基)丁基] -2,2-二甲基-1,3-二恶烷-4,6-二酮)或乙基梅德鲁姆酸(2,2-二甲基-1,3-二恶烷-4,6-二酮)。获得后一种产物的最佳方法是由Meldrum的酸与原乙酸三乙酯反应,然后还原硼氢化钠来合成1-乙氧基亚乙基Meldrum的酸。