A Transition-Metal-Free One-Pot Cascade Process for Transformation of Primary Alcohols (RCH<sub>2</sub>
OH) to Nitriles (RCN) Mediated by SO<sub>2</sub>
F<sub>2</sub>
作者:Ying Jiang、Bing Sun、Wan-Yin Fang、Hua-Li Qin
DOI:10.1002/ejoc.201900478
日期:2019.6.2
A new transition‐metal‐free one‐pot cascade process for the direct conversion of alcohols to nitriles was developed without introducing an “additional carbon atom”. This protocol allows transformations of readily available, inexpensive, and abundant alcohols to highly valuable nitriles.
The present invention provides a compound of the Formula I: wherein A is: and W, Y, X, R
1
, R
2
, R
3
, and R
4
are as defined herein, or a pharmaceutically acceptable salt thereof, for use as an inhibitor of the EP4 receptor.
Verfahren zur Herstellung von 3,5-Dimethyl-4-methoxypyridinderivaten sowie neues Zwischenprodukt hierfür
申请人:Hafslund Nycomed Pharma Aktiengesellschaft
公开号:EP0369208A1
公开(公告)日:1990-05-23
Verfahren zur Herstellung von Verbindungen der allgemeinen Formel I
in der X die Reste OH oder Cl bedeutet, durch katalytische Hydrierung von 3,5-Dimethyl-4-methoxypyridin-2-carbonitril, anschließende Umsetzung des entstandenen 3,5-Dimethyl-4-methoxypyridin-2-methanamin zu 3,5-Dimethyl-4-methoxypyridin-2-methanol und gegebenenfalls Chlorierung zu 3,5-Dimethyl-4-methoxy-2-chlormethylpyridin, sowie das neue Zwischenprodukt 3,5-Dimethyl-4-methoxy-pyridin-2-methanamin.
The present invention provides a compound of the Formula I: wherein A is: and W, Y, X, R1, R2, R3, and R4 are as defined herein, or a pharmaceutically acceptable salt thereof, for use as an inhibitor of the EP4 receptor.
本发明提供了一种式 I 的化合物,其中 A 为:且 W、Y、X、R1、R2、R3 和 R4 如本文所定义,或其药学上可接受的盐,可用作 EP4 受体的抑制剂。