Synthesis of 4-Substituted 3,5-Dicyano-2,6-piperidinediones Using Lithium Nitride as a Convenient Source of Ammonia
作者:Li qiang Wu、Chunguang Yang、Liming Yang、Lijuan Yang
DOI:10.3987/com-08-11584
日期:——
A simple and efficient one-pot synthesis of 4-substituted-3,5-dicyano-2,6-piperidinediones was achieved in good yields via the three-component reaction of aldehyde or ketone, ethyl cyanoacetate, lithium nitride (Li 3 N) as a convenientsource of ammonia in MeOH.
通过醛或酮、氰基乙酸乙酯、氮化锂 (Li 3 N) 的三组分反应,以良好的收率实现了简单高效的一锅法合成 4-取代-3,5-二氰基-2,6-哌啶二酮作为 MeOH 中氨的方便来源。
Structures and fluorescence of secondary products produced from the cope-knoevenagel reaction of 2-phenylpropionaldehyde with methyl cyanoacetate
of 2-phenylpropionaldehyde (7) with methylcyanoacetate (8) produced methyl (E)-2-cyano-4-phenylpent-2-enoate (9) and the two highly fluorescent secondary products, 2-amino-3-carbomethoxy-6-phenyl-4-(1-phenylethyl)pyridine (10) and 3-cyano-6-phenyl-4-(1-phenylethyl)-2-pyridone (11). The structure of 10 was determined by X-ray crystallography while the structure of 11 was confirmed by the conversion