摘要
研究了Ｐｄ（ＯＡｃ）２－ＰＰｈ３－ｐ－Ｔｓ催化剂体系存在下，叔丁醇羰化生成异戊酸酯的反应．典型的反应条件是：温度１２０～１６０℃，压力３．０～７．０ＭＰａ，Ｐｄ浓度３．６ｍｍｏｌ／Ｌ，ｎＰｄ∶ｎＰＰｈ３∶ｎｐ－Ｔｓ＝１∶３０∶８０，时间１２～２４ｈ．在上述反应条件下，叔丁醇羰化生成异戊酸酯的产率为１１．０％～８３．６％，选择性为１３．１％～９５．０％．
t Butyl alcohol was carbonylated into ester of i valeric acid in the presence of a palladium acetate triphenylphosphine p toluenesulfonic acid (Pd(OAc) 2 PPh 3 p Ts) catalytic system without any halogen promoter or other extreme conditions. Typical reaction conditions were: θ =120￣160℃; p CO =4 0￣7 0 MPa; n Me 3COH ∶ n ROH ∶ n Pd =490∶40000∶1; c Pd =3 6 mmol/L; n Pd ∶ n PPh 3 ∶ n p Ts =1∶30∶80; solvent=methanol, ethanol, i propanol or n butanol ; t =12￣24 h. Under these experimental conditions, high yield (83 6%) and selectivity (95 0%) for ester of i valeric acid were obtained. It was also found that the catalytic activity was strongly influenced by the nature of the solvent.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
1996年第4期311-314,共4页
基金
国家自然科学基金及石油化工科学研究院基金
关键词
叔丁醇
羰化反应
异戊酸酯
钯催化剂
三苯基膦
Butyl alcohol, Carbonylation, Ester of i valeric acid, Palladium catalyst, Triphenylphosphine
