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
    • 1. 发明授权
    • Preparation of aromatic nitroso compounds
    • 芳香族亚硝基化合物的制备
    • US3989764A
    • 1976-11-02
    • US394248
    • 1973-09-04
    • John Mathers Woolley
    • John Mathers Woolley
    • B01J21/06B01J23/00B01J23/34B01J27/18B01J27/20C07C81/00C07C81/02C07C81/06
    • B01J23/34
    • A process for the manufacture of nitroso compounds of the benzene series which comprises heating an aromatic nitrobenzene compound with an aldehyde, ketone or alcohol in the presence of a catalyst having a lattice consisting of a heavy metal selected from antimony, bismuth, cerium, chromium, cobalt, copper, germanium, gold, iron, lanthanum, lead, manganese, mercury, molybdenum, neodymium, nickel, rhenium, silver, tantalum, thallium, thorium, tin, titanium, tungsten, vanadium and zirconium, in association with oxygen atoms or hydroxyl, carbonate or phosphate ions and having at least one other of said heavy metals forming impurity atoms in the lattice. This process is related to those described in U.S. Pat. Nos. 3,578,720 and 3,700,605 but replaces the carbon monoxide used as reducing agent by an aldehyde, ketone or alcohol, especially a lower aliphatic alcohol, with consequent advantages in lower toxicity and ease of control of the process. The preferred reducing agent is methanol.
    • 一种制备苯系亚硝基化合物的方法,该方法包括在具有由选自锑,铋,铈,铬等的重金属构成的晶格的催化剂存在下,用醛,酮或醇加热芳族硝基苯化合物, 钴,铜,锗,金,铁,镧,铅,锰,汞,钼,钕,镍,铼,银,钽,铊,钍,锡,钛,钨,钒和锆,与氧原子或 羟基,碳酸根或磷酸根离子,并且所述重金属中至少一种形成杂质原子在晶格中。 该方法与美国专利No. No.3,578,720和3,700,605,但是用醛,酮或醇,特别是低级脂族醇代替用作还原剂的一氧化碳,具有较低的毒性和易于控制该方法的优点。 优选的还原剂是甲醇。