Reaction of 3-hydroxy-1,2,3,4-tetrahydroquinoline-2,4-diones with ethyl(triphenylphosphoranylidene)acetate
作者:Stanislav Kafka、Michal Kovář、Antonín Klásek、Thomas Kappe
DOI:10.1002/jhet.5570330667
日期:1996.11
The Wittig reaction of 3-hydroxy-1,2,3,4-tetrahydroquinoline-2,4-diones 2 with ethyl (triphenyl-phosphoranylidene)acetate 3 proceeds stereoselectively to give E-4-carbethoxymethylene-1,2,3,4-tetra-hydro-2-quinolones 4, which were hydrolyzed to corresponding acids 6 Butenolides 5 were detected and, in some cases, isolated as a minor product of the Wittig reaction.
3-羟基-1,2,3,4-四氢喹啉-2,4-二酮2与(三苯基-膦亚基)乙酸乙酯3的Wittig反应进行立体选择,得到E -4-碳乙氧基亚甲基-1,2,3,4水解成相应的酸6的-四氢-2-喹诺酮4被检测到,丁腈内酯5在某些情况下作为Wittig反应的次要产物被分离出来。