Ethyl 4-oxo-2-alkenoates and 1,4-dioxo-2-alkenes are easily prepared by treating ethyl 4-hydroxy-2-alkynoates and 4-hydroxy-2-alkyn-1-ones with n-tributylamine. Treatment of ethyl 4-hydroxy-2-alkynoates and 4-hydroxy-2-alkyn-1-ones with palladium-tributylammonium formate produces ethyl 4-oxo-alkanoates and 1,4-alkandiones in good to high yield through a novel one-pot isomerization/hydrogenation reaction
通过用正
三丁胺处理
4-羟基-2-炔基
乙酯和
4-羟基-2-炔基-1-酮,可以容易地制备4-氧代-2-链烯酸
乙酯和1,4-二氧代-2-链烯。用
甲酸钯-三丁基
铵处理
4-羟基-2-链烷酸
乙酯和
4-羟基-2-炔基-1-酮可通过新颖的单-羟基
苯甲酸乙酯生成4-氧代链烷酸
乙酯和1,4-链烷酮,收率高至高。锅异构化/氢化反应。