化学通报(网络版)
化學通報(網絡版)
화학통보(망락판)
Chemistry Online
2008年
1期
,共1页
胡耀云%尹静梅*%高大彬%贾颖萍%周广运%崔颖娜%李慎敏
鬍耀雲%尹靜梅*%高大彬%賈穎萍%週廣運%崔穎娜%李慎敏
호요운%윤정매*%고대빈%가영평%주엄운%최영나%리신민
光促进羰基化反应%溴代烷烃%甲酸甲酯%钴盐%铜盐
光促進羰基化反應%溴代烷烴%甲痠甲酯%鈷鹽%銅鹽
광촉진탄기화반응%추대완경%갑산갑지%고염%동염
Photopromoted carbonylation%Bromoalkanes%Methyl formate%Cobalt salts%Copper salts
研究了光促进温和条件下,以甲酸甲酯为C1源,非贵金属钴盐、铜盐催化的溴代烷烃的羰基化反应.实验表明,在光促进下,钴盐、铜盐均可催化溴代烷烃与甲酸甲酯的羰基化反应,得到相应的羧酸甲酯.钴盐催化下,碱性添加物NaOAc对反应有很好的促进作用,直链溴代烷烃在反应中除了得到相应的正构酯外,还有少量异构酯生成;铜盐催化下,直链溴代烷烃在反应中主要生成相应的正构酯.机理研究表明,在光照下甲酸甲酯先分解为CO和CH3OH,再与溴代烷烃进行羰基化反应.
研究瞭光促進溫和條件下,以甲痠甲酯為C1源,非貴金屬鈷鹽、銅鹽催化的溴代烷烴的羰基化反應.實驗錶明,在光促進下,鈷鹽、銅鹽均可催化溴代烷烴與甲痠甲酯的羰基化反應,得到相應的羧痠甲酯.鈷鹽催化下,堿性添加物NaOAc對反應有很好的促進作用,直鏈溴代烷烴在反應中除瞭得到相應的正構酯外,還有少量異構酯生成;銅鹽催化下,直鏈溴代烷烴在反應中主要生成相應的正構酯.機理研究錶明,在光照下甲痠甲酯先分解為CO和CH3OH,再與溴代烷烴進行羰基化反應.
연구료광촉진온화조건하,이갑산갑지위C1원,비귀금속고염、동염최화적추대완경적탄기화반응.실험표명,재광촉진하,고염、동염균가최화추대완경여갑산갑지적탄기화반응,득도상응적최산갑지.고염최화하,감성첨가물NaOAc대반응유흔호적촉진작용,직련추대완경재반응중제료득도상응적정구지외,환유소량이구지생성;동염최화하,직련추대완경재반응중주요생성상응적정구지.궤리연구표명,재광조하갑산갑지선분해위CO화CH3OH,재여추대완경진행탄기화반응.
The photopromoted carbonylation of bromoalkanes with methyl formate was carried out under ambient conditions catalyzed by cobalt and copper salts. The results indicated that the corresponding esters were produced. Furthermore, the yield of esters could be improved greatly by adding sodium acetate with the cobalt catalysts. Except linear esters, a small amount of isomeric esters were obtained in the carbonylation of the straight chain bromoalkanes with the cobalt catalysts, while the major carbonylation products were linear esters with the copper catalysts. Methyl formate can be decomposed into CO and CH3OH under irradiation, and then the carbonylation of bromoalkanes will proceed with the CO.