Published as part of the Special Topic Recent Advances in Amide Bond Formation Abstract A post-Passerini condensation transformation can be employed in the synthesis of three types of amides: α-hydroxy, α-oxy, and α-oxo amides. K2CO3 efficiently promotes the solvolysis of α-acetoxy amides to form α-hydroxy amides in methanol. 2-Acetoxy-2-(2-alkynylquinolin-3-yl)acetamides in basic methanol are cyclized
作为特别主题的一部分发表,酰胺键形成的最新进展 抽象 Passerini后缩合转化可用于合成三种类型的酰胺:α-羟基,α-氧基和α-氧代酰胺。K 2 CO 3有效地促进α-乙酰氧基酰胺的溶剂分解以在甲醇中形成α-羟基酰胺。碱性甲醇中的2-乙酰氧基-2-(2-炔基喹啉-3-基)乙酰胺通过脱乙酰基作用和5- exo - dig环化作用环化为1,3-二氢呋喃[3,4- b ]喹啉-1-羧酰胺。在碱性介质中用I 2处理2-羟基-2- [2-(苯基乙炔基)喹啉-3-基]乙酰胺产生吡咯并[2,3- b]喹啉-2,3-二酮。该环化涉及分子内环化,脱炔基芳构化和仲醇的氧化。
A Passerini/Michael Pathway towards Butyrolactones
作者:Shuanglong Jia、Laurent El Kaïm
DOI:10.1002/ejoc.201800958
日期:2018.12.13
adducts of aromatic and heteroaromatic aldehydes was developed. This strategy significantly expands the scope of the butyrolactones syntheses from benzoinderivatives with microwave conditions allowing to counterbalance the poorer electron‐withdrawing group effect of the amide moiety.