申请人:Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
公开号:US04169951A1
公开(公告)日:1979-10-02
Pyridines substituted in the 2- and 3-positions by aromatic or heteroaromatic groups are prepared by reacting an aromatic or heteroaromatic substituted ketone which has at least one reactive methylene group adjacent to the keto group with an aliphatic oxo compound having a carbon to carbon ethylenic double bond on the carbon atom adjacent to the oxo group and ammonia in the presence of a dehydrating and dehydrogenating catalyst at a temperature of about 250.degree. to 550.degree. C.
在2-和3-位置被芳香或杂环芳香基团取代的吡啶是通过将至少具有与酮基相邻的一个反应性亚甲基基团的芳香或杂环芳香取代酮与具有相邻氧代基的碳-碳乙烯双键的脂肪族羰基化合物以及氨在脱水和脱氢催化剂的存在下在约250℃至550℃的温度下反应制备的。