制备了由金属氧化物和几丁质衍生的碳组成的钴掺杂杂化材料,对其进行了表征并进行了工业相关腈加氢测试。在700°C下热解后,负载在MgO上的最佳催化剂显示了用碳包裹的Co纳米颗粒修饰的氧化镁纳米立方体。这种特殊的结构允许在温和的条件下(例如70°C,20 bar H 2)将各种苛刻的腈选择性氢化为相应的伯胺。)。这种新型催化材料的优势在工业上重要的底物上得到了展示,这些底物包括己二腈,吡咯腈和脂肪酸腈。值得注意的是,在这些转换中,开发的系统优于所有其他经过测试的商业催化剂,例如阮内镍,甚至贵金属基系统。
[EN] C-4" POSITION SUBSTITUTED MACROLIDE DERIVATIVE<br/>[FR] DÉRIVÉ DE MACROLIDE SUBSTITUÉ EN POSITION C-4"
申请人:TAISHO PHARMA CO LTD
公开号:WO2012115256A1
公开(公告)日:2012-08-30
A macrolide compound represented by the formula (I) effective against erythromycin resistant bacteria (for example, resistant pneumococci, streptococci and mycoplasmas).
Curtius Rearrangement of ω-Azido Acid Chlorides: Access to the Corresponding ω-Azido Substituted Amines and Carbamates, Useful Building Blocks for Polyamine Syntheses
Treatment of Ï-azido acid chlorides with trimethylsilyl azide affords Ï-azido isocyanates which can be easily converted in good yields to the corresponding Ï-azidoamines or Ï-azidocarbamates. 1,3- and 1,4-Diamine dihydrochlorides can then be prepared by catalytic hydrogenation or reductive alkylation with an organodichloroborane.
A macrolide compound represented by the formula (I) effective against erythromycin resistant bacteria (for example, resistant pneumococci, streptococci and mycoplasmas).
Use of Tetrahydro-2<i>H</i>-1,3-Oxazinones as Aminopropylation Agents
作者:Graham S. Poindexter、Karen M. Strauss
DOI:10.1080/00397919308011220
日期:1993.5
Treatment of tetrahydro-2H-1,3-oxazin-2-one (1) or the 3-methyl derivative 2 with aniline salts or thiophenols at 180-degrees-C affords the corresponding N-aryl-1,3-propanediamines 3 or 3-(arylthio)propanamines 4 in good yields.