公开(公告)号：IL41400A

公开(公告)日：1976-02-29

申请号：IL4140073

申请日：1973-01-25

Applicant: SNIA VISCOSA

IPC: C07D201/02 ,  C07C67/00 ,  C07C201/00 ,  C07C207/00 ,  C07C239/00 ,  C07C251/46 ,  C07D201/04 ,  C07D201/10 ,  C07D205/08 ,  C07D207/263 ,  C07D223/02 ,  C07C61/08 ,  C07C131/00 ,  C07C161/00 ,  C07D41/06

Abstract: 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.

公开(公告)号：SE7602498L

公开(公告)日：1976-02-26

申请号：SE7602498

申请日：1976-02-26

Applicant: SNIA VISCOSA

Inventor： GIUFFRE L ,  SIOLI G ,  MATTONE R

IPC: C07D201/02 ,  C07C67/00 ,  C07C201/00 ,  C07C207/00 ,  C07C239/00 ,  C07C251/46 ,  C07D201/04 ,  C07D201/10 ,  C07D205/08 ,  C07D207/263 ,  C07D223/02 ,  C07C13/28

Abstract: 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.

公开(公告)号：CS164283B2

公开(公告)日：1975-11-07

申请号：CS669770

申请日：1970-10-02

IPC: C07D201/10 ,  C07D201/02 ,  C07D41/06

Abstract: 1297317 #-caprolactam RHONE-POULENC SA 2 Oct 1970 [3 Oct 1969] 47073/70 Heading C2C #-Caprolactam is prepared from a cyclohexane oxidation product containing cyclohexyl hydroperoxide and oxidation by-products including 6- hydroperoxyhexanoic acid which has been obtained by liquid phase oxidation of cyclohexane, without a metal catalyst, using a molecular oxygen containing gas, by washing the oxidation product with water, separating the resulting aqueous phase containing 6- hydroperoxy-hexanoic acid, and heating the 6-hydroperoxy-hexanoic acid under elevated pressure with ammonia and hydrogen in the presence of a hydrogenation catalyst. The oxidation product is suitably washed with 0À01 to 1À0 times its weight of water at 5-100‹ C. and the aqueous phase, prior to being heated with ammonia and hydrogen may be extracted with a liquid hydrocarbon or a water-immiscible solvent comprising an alcohol, ester or ketone; the aqueous phase may then be heated at 200- 300‹ C. under a pressure of 10-200 bars in the presence of hydrogen and 5-25 mols. of ammonia per mol. of 6-hydroperoxy-hexanoic acid. A preferred starting material is a cyclohexane solution of cyclohexyl hydroperoxide in which the oxidized products, which are less volatile than cyclohexane, contain at least 50% by wt. of peroxidic products; suitable hydrogenation catalysts include nickel, platinum, palladium, ruthenium and rhodium which may be supported.

公开(公告)号：GB1411061A

公开(公告)日：1975-10-22

申请号：GB391673

申请日：1973-01-25

Applicant: SNIA VISCOSA

IPC: C07D201/02 ,  C07C67/00 ,  C07C201/00 ,  C07C207/00 ,  C07C239/00 ,  C07C251/46 ,  C07D201/04 ,  C07D201/10 ,  C07D205/08 ,  C07D207/263 ,  C07D223/02 ,  C07D295/10

Abstract: 1411061 Omega lactams and precursors therefor SNIA VISCOSA SOC NAZIONALE INDUSTRIA APPLICAZIONI VISCOSA SpA 25 Jan 1973 [27 Jan 1972] 3916/73 Heading C2C A novel adduct of a cyclomethylene ketene and sulphur dioxide is prepared by reacting these two compounds preferably in solution in, for example, CCI 4 , cyclohexane, n-hexane or liquid SO 2 , and removing any excess SO 2 . The ketene is suitably cyclopentamethylene ketene, and the adduct may have the formula wherein n= 1 to 4. The adduct may be nitrosated and the nitroso compound so obtained may be converted into an omega-lactam or a precursor thereof, e.g. by heating to a temperature of from 20‹ C. to 100‹ C. Examples relate to the production of caprolactam.

公开(公告)号：ATA55273A

公开(公告)日：1975-08-15

申请号：AT55273

申请日：1973-01-23

Applicant: SNIA VISCOSA

IPC: C07D201/02 ,  C07C67/00 ,  C07C201/00 ,  C07C207/00 ,  C07C239/00 ,  C07C251/46 ,  C07D201/04 ,  C07D201/10 ,  C07D205/08 ,  C07D207/263 ,  C07D223/02 ,  C07D223/10

Abstract: 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.

公开(公告)号：DE1468737B2

公开(公告)日：1975-05-15

申请号：DE1468737

申请日：1963-07-27

Applicant: TORAY INDUSTRIES INC., TOKIO

Inventor： ITO, YOSHIKAZU ,  HARA, YOICHIRO

IPC: B01J19/12 ,  C07D201/10 ,  C07C131/02

公开(公告)号：AU452093B2

公开(公告)日：1974-08-29

申请号：AU3214971

申请日：1971-08-09

IPC: C07D201/10

公开(公告)号：AU5098273A

公开(公告)日：1974-07-11

申请号：AU5098273

申请日：1973-01-11

Applicant: SNIA VISCOSA

Inventor： GUIFFRE LUIGI ,  SIOLO GIANCARLO ,  MATTONE ROBERTO

IPC: C07D201/02 ,  C07C67/00 ,  C07C201/00 ,  C07C207/00 ,  C07C239/00 ,  C07C251/46 ,  C07D201/04 ,  C07D201/10 ,  C07D205/08 ,  C07D207/263 ,  C07D223/02 ,  C07C131/04 ,  C07D41/06

Abstract: 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.

公开(公告)号：NL7301166A

公开(公告)日：1973-07-31

申请号：NL7301166

申请日：1973-01-26

IPC: C07D201/02 ,  C07C67/00 ,  C07C201/00 ,  C07C207/00 ,  C07C239/00 ,  C07C251/46 ,  C07D201/04 ,  C07D201/10 ,  C07D205/08 ,  C07D207/263 ,  C07D223/02 ,  C07C41/06 ,  C07C131/04

Abstract: 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.

公开(公告)号：IE37149L

公开(公告)日：1973-07-27

申请号：IE13373

申请日：1973-01-26

Applicant: SNIA VISCOSA

IPC: C07D201/02 ,  C07C67/00 ,  C07C201/00 ,  C07C207/00 ,  C07C239/00 ,  C07C251/46 ,  C07D201/04 ,  C07D201/10 ,  C07D205/08 ,  C07D207/263 ,  C07D223/02 ,  C07C49/22 ,  C07D207/26

Abstract: 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.