会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明授权
    • Process for preparing nitriles by elimination reactions
    • 通过消除反应制备腈的方法
    • US07939688B2
    • 2011-05-10
    • US11996105
    • 2006-07-05
    • Andreas MeudtSven NerdingerClaudius Boehm
    • Andreas MeudtSven NerdingerClaudius Boehm
    • C07C253/20
    • C07C253/20C07C255/50C07C255/51C07C255/54
    • Process for preparing nitriles by reacting N-alkylcarboxamides (RCO—NHR1) or ammonium salts of carboxylic acids (RCOO—NH3R1+) or carboxylic acids in the presence of alkylamines or ammonium salts (RCOOH+NH2R1, RCOOH+NH3R1+), respectively, R being an arbitrarily substituted linear or branched C1-C12-alkyl radical, a C3-C12 cycloalkyl radical or an alkenyl, alkynyl or aryl or heteroaryl radical and R1 being an arbitrary substituted, linear or branched C2-C1 alkyl radical, a C3-C12 cycloalkyl radical or an alkenyl or alkynyl radical, with phosphonic anhydrides in the presence of an optional base in an organic solvent at a temperature in the range from −30 to 180° C. In advantageous embodiments, the phosphonic anhydride is a 2,4,6-substituted 1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide of the formula (I)
    • 在烷基胺或铵盐(RCOOH + NH 2 R 1,RCOOH + NH 3 R 1 +)存在下,通过N-烷基羧酰胺(RCO-NHR1)或羧酸铵盐(RCOO-NH 3 R 1 +)或羧酸反应来制备腈的方法,R为 任意取代的直链或支链C 1 -C 12烷基,C 3 -C 12环烷基或烯基,炔基或芳基或杂芳基,R 1为任意取代的直链或支链C 2 -C 1烷基,C 3 -C 12环烷基 基团或烯基或炔基与膦酸酐在有机溶剂中在任选的碱存在下在-30至180℃的温度下反应。在有利的实施方案中,膦酸酐是2,4,6 式(I)的1,3,5,2,4,6-三氧杂三磷杂环己烷2,4,6-三氧化物
    • 7. 发明授权
    • Process for the producing of pentenenitriles
    • 戊烯腈生产工艺
    • US5834616A
    • 1998-11-10
    • US849923
    • 1997-09-15
    • Anne-Marie Le GovicIsabelle Storet
    • Anne-Marie Le GovicIsabelle Storet
    • C07C253/00C07C253/20
    • C07C253/00
    • The present invention relates to a process for the preparation of pentenenitriles. In this process the 3- or 4-pentenenitriles are produced by reacting 2-methylglutarimide, ethylsuccinimide, and/or their precursors, such as 4-cyanovalerimide, 2-methyl-4-cyanobutyrimide, 4-cyanovaleric acid, 2-methyl-4-cyanobutyric acid, 3-cyanovalerimide, 2-ethyl-3-cyanopropionimide, 3-cyanovaleic acid, and 2-ethyl-3-cyanopropionic acid, in the vapor phase at temperatures of 200.degree. to 600.degree. C. in the presence of an acidic solid catalyst, such as acidic molecular sieves, acidic clays, bridged or pillared clays, bulk oxides, and acidic phosphates.
    • PCT No.PCT / FR95 / 01644 Sec。 371日期:1997年9月15日 102(e)日期1997年9月15日PCT提交1995年12月12日PCT公布。 公开号WO96 / 19439 日期1996年6月27日本发明涉及一种制备戊烯腈的方法。 在该方法中,3-或4-戊烯腈通过2-甲基戊二酰亚胺,乙基琥珀酰亚胺和/或其前体如4-氰基戊酰亚胺,2-甲基-4-氰基丁酰亚胺,4-氰基戊酸,2-甲基-4 氰基丁酸,3-氰基戊酰亚胺,2-乙基-3-氰基丙酰亚胺,3-氰基苹花酸和2-乙基-3-氰基丙酸,在200〜600℃的温度下,在 酸性固体催化剂,如酸性分子筛,酸性粘土,桥接或柱状粘土,本体氧化物和酸性磷酸盐。