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公开(公告)号:US4496729A
公开(公告)日:1985-01-29
申请号:US511574
申请日:1983-07-07
CPC分类号: C07D241/24 , B01J21/16 , B01J23/22 , B01J23/34 , B01J23/84 , B01J35/10 , B01J35/1014 , B01J35/1038 , B01J35/1066 , B01J35/1071
摘要: For the catalytic reaction of 2-methylpyrazine with ammonia and oxygen to form 2-cyanopyrazine there are used compounds of the elements antimony, vanadium, and oxygen and at least one of the elements iron, copper, titanium, cobalt, manganese, and nickel, whereby the atomic ratio of antimony to vanadium is greater than 1 and which contain besides these compounds a lattice layer silicate and a highly dispersed silica. These catalysts are very selective and result in high yields and high space-time-yields.
摘要翻译: 对于2-甲基吡嗪与氨和氧的形成2-氰基吡嗪的催化反应,使用元素锑,钒和氧以及铁,铜,钛,钴,锰和镍中的至少一种元素, 由此锑与钒的原子比大于1,除了这些化合物外,还含有晶格层硅酸盐和高度分散的二氧化硅。 这些催化剂是非常有选择性的并且导致高产率和高的空时产率。
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公开(公告)号:US4356324A
公开(公告)日:1982-10-26
申请号:US221915
申请日:1980-12-31
IPC分类号: B01J31/22 , B01J31/24 , C07C29/147 , C07C233/45 , C07F9/50 , C07F13/00 , C07F15/00 , H01B13/14
CPC分类号: B01J31/2409 , C07C29/147 , C07C309/00 , C07F15/0073 , C07F9/5027 , B01J2231/645 , B01J2531/822 , B01J2531/828 , B01J31/2291 , B01J31/2295 , C07B2200/07
摘要: The invention is directed to optically active 1,2-bis-(diphenylphosphino)-compounds of the general formula ##STR1## where Ph is a phenyl group and R is a straight or branched chain alkyl group with 2 to 20 carbon atoms or a benzyl group. Especially preferred are compounds in which R is an isopropyl or a benzyl group. These compounds can serve as chiral ligands in noble metal complexes, especially in rhodium complexes, which can be used as catalysts for the homogeneous asymmetrical hydrogenation of pro-chiral unsaturated compounds.
摘要翻译: 本发明涉及通式为“IMAGE”的光学活性1,2-双(二苯基膦基)化合物,其中Ph为苯基,R为具有2至20个碳原子的直链或支链烷基或苄基 组。 特别优选的是其中R是异丙基或苄基的化合物。 这些化合物可用作贵金属配合物中的手性配体,特别是在铑络合物中,可用作催化剂用于促进手性不饱和化合物的均相不对称氢化。
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