申请人:STAMICARBON B.V.
公开号:EP0192297A1
公开(公告)日:1986-08-27
The process according to the invention for the preparation of a 2-propyl- or 2-butylpyrimidine, in which the corresponding 2-alkyl-1,4,5,6-tetrahydropyrimidine is dehydrogenated in the gas phase with a palladium-containing catalyst and in which a 2-propyl- or 2-butylpyrimidine is recovered from the reaction mixture, is characterized in that the gas-phase reaction is carried out using a carbon monoxide-hydrogen reactant. As this is understood a mixture of carbon monoxide and hydrogen and/or a compound capable of at least partial decomposing into CO and H2 under the reaction conditions.
根据本发明制备2-丙基或2-丁基嘧啶的工艺,在气相中用含钯催化剂使相应的2-烷基-1,4,5,6-四氢嘧啶脱氢,并从反应混合物中回收2-丙基或2-丁基嘧啶,其特征在于气相反应是用一氧化碳-氢反应物进行的。一氧化碳和氢的混合物和/或在反应条件下至少能部分分解成一氧化碳和氢的化合物。