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.
在反应芳香或杂芳基取代的酮中,至少有一个反应性亚甲基与酮基相邻,与具有碳碳乙烯双键的脂肪族氧化合物和氨在脱水和脱氢催化剂的存在下,在温度约为250°C至550°C的条件下反应,制备出在2-和3-位置上被芳香或杂芳基取代的吡啶。