Dehydration of Chiral α-Amides to Chiral α-Nitriles Under the Appel Reaction Conditions
作者:Shekharappa、L. Roopesh Kumar、C. Srinivasulu、Vommina V. Sureshbabu
DOI:10.1007/s10989-020-10101-y
日期:2021.3
Nα-protected amino acid amides to corresponding nitriles with neither harsh condition nor catalyst. Graphic Abstract Nα-protected amino acid amides were efficiently transformed to Nα-protected amino acid nitriles employing I2, PPh3, and NMM under mild reaction conditions. Fmoc, Boc and Cbz-protected amino acid amides were converted into their corresponding nitriles groups. Side chain protected amino acid amides
N的有效的合成α -保护的氨基腈选自N α -保护的使用pH值氨基酰胺3 P,I 2和NMM被描述。受Fmoc,Z和Boc保护的各种氨基酸酰胺可方便地以高收率转化为腈。侧链保护的氨基酸酰胺具有良好的耐受性,并获得了良好的产物收率。该协议用作温和的一个,对于N的自由外消旋转换几个可用的,方法中α -保护的氨基酸酰胺与既不苛刻的条件,也没有催化剂相应的腈。 图形摘要 Ñ α -保护的氨基酸酰胺被有效转化成N α采用我-保护氨基酸腈2,PPH 3,和NMM温和的反应条件下进行。Fmoc,Boc和Cbz保护的氨基酸酰胺被转化为相应的腈基。侧链保护的氨基酸酰胺也容易以良好的产率转化为其相应的腈。