-
1.发明授权Method for the production of caprolactam and its precursors by formation and nitrosation of the cyclopentamethylene, ketene-so{11 {11 adduct and products obtained thereby 失效通过形成和消除环戊二烯，KETENE-SO {11 {11添加剂及其获得的产品）生产卡波仑及其前体的方法
公开(公告)号：US3835124A
公开(公告)日：1974-09-10
申请号：US32556373
申请日：1973-01-22
申请人： SNIA VISCOSA
IPC分类号： C07D201/02 , C07C67/00 , C07C201/00 , C07C207/00 , C07C239/00 , C07C251/46 , C07D201/04 , C07D201/10 , C07D205/08 , C07D207/263 , C07D223/02 , C07D41/06
CPC分类号： C07D201/10
摘要： A method for the preparation of omega lactams is disclosed, more particularly epsilon caprolactam or a precursor thereof (such as cyclohexanone oxime), using as the starting material a cyclomethylene ketene, with the simultaneous formation of side products such as cyclohexanecarboxylic acid, wherein an adduct is preliminarly formed between cyclomethylene ketene and sulphur dioxide. The adduct is then reacted with a nitrosating agent so as to obtain, under the appropriate reaction conditions, the expected lactam, more specifically epsilon caprolactam.
摘要翻译： 公开了制备ω内酰胺的方法，更特别的是ε己内酰胺或其前体（例如环己酮肟），其以起始材料为环亚甲基乙烯酮，同时形成副产物如环己烷羧酸，其中加合物 在环亚甲基乙烯酮和二氧化硫之间初步形成。 然后将加合物与亚硝化剂反应，以在适当的反应条件下获得预期的内酰胺，更具体地是ε己内酰胺。
-
2.发明授权
公开(公告)号：US3733317A
公开(公告)日：1973-05-15
申请号：US3733317D
申请日：1970-06-30
申请人： SNIA VISCOSA
IPC分类号： C07D201/10 , C07D41/06
CPC分类号： C07D201/10
摘要： THERE IS DESCRIBED A PROCESS FOR THE PREPARATION OF OMEGA-LACTAMS HAVING THE GENERAL FORMULA:
O=C
WHEREIN N= FROM 2 TO 13, AND/OR OF THEIR LACTAMIZABLE PRECURSORS, WHICH MAY BE CYCLOALIPHATIC OXIMES OR CYCLOALIPHATIC NITROSO DERIVATIVES, MONOMERS OR DIMERS CHARACTERIZED BY THE FACT THAT THE CORRESPONDING CYCLOMETHYLENE KETENE, HAVING THE GENERAL FORMULA
O=C=C
WHERE N HAS THE AFOREMENTIONED VALUE, IS SUBJECTED TO NITROSATION WITH A NITROSATING AGENT OF THE FORMULLA NOX, WHERE X CAN BE -HSOBJ4, -CL, -NO2, -OR (IN WHICH R INDICATES AN ALKYL OR ARYL ORGANIC SUBSTITUENT), AT A TEMPERATURE COMPRISED BETWEEN -60*C. AND + 100*C.
-
搜索结果
2 条记录 (耗时 0.008 秒)
