公开(公告)号：CH587212A5

公开(公告)日：1977-04-29

申请号：CH58073

申请日：1973-01-16

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 ,  C07C49/45

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：DE2048575B2

公开(公告)日：1977-03-24

申请号：DE2048575

申请日：1970-10-02

IPC: C07D201/10 ,  C07D201/02 ,  C07D201/08

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：NL7514685A

公开(公告)日：1976-06-25

申请号：NL7514685

申请日：1975-12-17

Applicant: TEXACO DEVELOPMENT CORP

IPC: C07C45/00 ,  C07C45/46 ,  C07C45/62 ,  C07C49/792 ,  C07C51/00 ,  C07C51/27 ,  C07C51/305 ,  C07C61/08 ,  C07C63/26 ,  C07C67/00 ,  C07D201/10 ,  C07D201/02

公开(公告)号：SE7602498A

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

CPC classification number: C07D201/10

公开(公告)号：ES410999A1

公开(公告)日：1975-12-01

申请号：ES410999

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 ,  C07D

Abstract: Procedimiento para la producción de W-lactama y precursores relacionados en particular de epsilon-lactama, o los precursores correspondientes, en particular la ciclohexanonoxima, partiendo del ciclometilenceteno correspondiente, en particular el ciclopentametilenceteno (CPMK) con formación simultánea de cantidades de productos colaterales utilizables, en particular de ácido ciclohexancarboxílico (AEB), caracterizado porque comprende formar un aducto entre el ciclometilenceteno y el SO2, en particular un aducto CPMK/SO2 y hacer reaccionar dicho aducto con un agente nitrosante para obtener un aducto nitrosado que puede dar, por reacciones sucesivas, la lactama deseada, en particular la epsilon-caprolactama o un precursor suyo

公开(公告)号：AT323713B

公开(公告)日：1975-07-25

申请号：AT410072

申请日：1970-07-02

Applicant: SNIA VISCOSA

IPC: C07C251/46 ,  C07C67/00 ,  C07C239/00 ,  C07D201/10 ,  C07D223/10 ,  C07C131/04

公开(公告)号：NL145544B

公开(公告)日：1975-04-15

申请号：NL7014176

申请日：1970-09-25

Applicant: RHONE POULENC SA

IPC: C07D201/10 ,  C07D201/02 ,  C07D223/10 ,  C07D201/08

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：DD105613A1

公开(公告)日：1974-05-05

申请号：DD16846773

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 ,  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：ZA73151B

公开(公告)日：1973-09-26

申请号：ZA73151

申请日：1973-01-09

Applicant: SINIA VISCOSA SOC NAZIONALE IN

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 ,  C07C

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：DE1303091B

公开(公告)日：1973-09-20

申请号：DE1303091D

申请日：1962-11-09

IPC: C07D201/10