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    • 21. 发明申请
    • Process for preparing alkenyl-substituted heterocycles
    • 烯基取代的杂环的制备方法
    • US20020123633A1
    • 2002-09-05
    • US10040726
    • 2001-10-22
    • Colin H. McAteerAaron J. EdwardsYarlagadda V. Subba Rao
    • C07D213/28C07D213/54
    • C07D213/06C07D213/02C07D241/12
    • Described are preferred processes for preparing alkenyl-substituted nitrogenous heterocycles such as vinylpyridines, which comprise reacting a corresponding methyl-substituted heterocycle with a C1 compound such as formadehyde in the vapor phase over a zeolite catalyst having acidic and basic catalytic sites. The preferred zeolite is a medium-pore zeolite, for example having a constraint index of about 0.5 to about 12. Processes of the invention can be conducted as facile, one-step syntheses utilizing relatively low ratios of alkyl-substituted starting heterocycle (e.g. null-picoline or null-picoline) to formaldehyde while nonetheless achieving high selectivities and yields of the corresponding alkenyl compound.
    • 描述了制备烯基取代的含氮杂环如乙烯基吡啶的优选方法,其包括使相应的甲基取代的杂环与气相中的C1化合物如甲醛反应,在具有酸性和碱性催化位点的沸石催化剂上反应。 优选的沸石是中孔沸石,例如具有约0.5至约12的约束指数。本发明的方法可以作为利用相对较低比例的烷基取代的起始杂环的简便的一步合成来进行(例如α - 甲基吡啶或γ-甲基吡啶)至甲醛,同时实现相应烯基化合物的高选择性和产率。
    • 29. 发明授权
    • Antisecretory agents
    • 防雾剂
    • US4289876A
    • 1981-09-15
    • US129158
    • 1980-03-10
    • Aldo A. AlgieriRonnie R. Crenshaw
    • Aldo A. AlgieriRonnie R. Crenshaw
    • C07D213/32C07D213/28
    • C07D213/32
    • Compounds of the formula ##STR1## wherein R.sup.1 is a straight or branched chain alkynyl group containing from 3 to 9 carbon atoms, inclusive; R.sup.2 is hydrogen, hydroxy, cyano, (lower)alkyl, (lower)alkoxy, halogen or amino; n is 2 or 3; X is NR.sup.3 or CHR.sup.3 ; R.sup.3 is cyano, nitro, SO.sub.2 Ar; or SO.sub.2 (lower)alkyl; R.sup.12 is hydrogen or (CH.sub.2).sub.p NR.sup.13 R.sup.14 ; p is an integer of from 1 to 4, inclusive; R.sup.13 and R.sup.14 each are independently hydrogen or (lower)alkyl; and Ar is phenyl or phenyl containing 1 or 2 substituents independently selected from halogen and (lower)alkyl; and nontoxic, pharmaceutically acceptable salts thereof, are potent anti-ulcer agents.
    • 式Ⅰ的化合物,其中R 1是含有3至9个碳原子的直链或支链炔基,包括端值; R2是氢,羟基,氰基,(低级)烷基,(低级)烷氧基,卤素或氨基; n为2或3; X是NR 3或CHR 3; R3是氰基,硝基,SO2Ar; 或SO 2(低级)烷基; R12是氢或(CH2)pNR13R14; p是1至4的整数,包括1和4; R 13和R 14各自独立地为氢或(低级)烷基; 和Ar是苯基或含有1或2个独立地选自卤素和(低级)烷基的取代基的苯基; 和无毒的药学上可接受的盐是有效的抗溃疡剂。