公开(公告)号：MX155669A

公开(公告)日：1988-04-12

申请号：MX18458280

申请日：1980-10-31

Applicant: SNIA VISCOSA

Inventor： ROSSI PIER PAOLO ,  CATONI MARIO

IPC: C07D201/16 ,  B01J19/18 ,  C07D201/08 ,  C07D201/10 ,  C07D223/10

公开(公告)号：IT1136561B

公开(公告)日：1986-09-03

申请号：IT1980181

申请日：1981-02-17

Applicant: FRIULI CHIM SPA

Inventor： DONATI IVO ,  ROSSI PIETRO PAOLO ,  ASTARITA DOMENICO ,  CATONI MARIO

IPC: C07C51/48 ,  C07C20060101 ,  C07C13/18 ,  C07C51/42 ,  C07C61/08 ,  C07C63/06 ,  C07D201/10 ,  C07C

公开(公告)号：CA1138447A

公开(公告)日：1982-12-28

申请号：CA362458

申请日：1980-10-15

Applicant: SNIA VISCOSA

Inventor： ROSSI PIER P ,  CATONI MARIO

IPC: C07D201/16 ,  B01J19/18 ,  C07D201/08 ,  C07D201/10 ,  C07D223/10

Abstract: Process for the preparation of .omega.-lactams (in particular caprolactam) with improved yields, by reaction of cycloaliphatic derivatives having the general formula wherein n = 3 - 13 with nitrosating agents in the presence of the dehydrating agents, characterized by the fact that the reaction is carried out a low temperature which is constant between stages and in all the zones of a stage and with particular concentrations of the dehydrating agent.

公开(公告)号：AR226323A1

公开(公告)日：1982-06-30

申请号：AR28302580

申请日：1980-10-28

Applicant: SNIA VISCOSA

IPC: C07D201/16 ,  B01J19/18 ,  C07D201/08 ,  C07D201/10 ,  C07D223/10

公开(公告)号：ES8107190A1

公开(公告)日：1981-10-01

申请号：ES496429

申请日：1980-10-31

Applicant: SNIA VISCOSA

IPC: C07D201/16 ,  B01J19/18 ,  C07D201/08 ,  C07D201/10 ,  C07D223/10

Abstract: PROCEDIMIENTO PARA LA OBTENCION DE OMEGA-LACTAMAS QUE CONTIENEN DE 5 A 14 ATOMOS DE CARBONO. SE BASA EN LA REACCION DE ACIDOS CICLOALIFATICOS DE FORMULA (I), EN LA QUE N VALE DE 3 A 13, O DE LOS CORRESPONDIENTES ANHIDRIDOS, CON UN AGENTE DE NITROSACION, CUYA CONCENTRACION SE MANTIENE A NIVEL CONSTANTE MEDIANTE UNOS ELECTRODOS REDOX INTRODUCIDOS EN LA MASA DE REACCION, Y EN PRESENCIA DE UN AGENTE DESHIDRATANTE. LA REACCION MOLAR DE AGENTES DESHIDRATANTE A AGENTE DE NITROSACION OSCILA ENTRE 0,7 Y 1. LA REACCION SE LLEVA A CABO A UNA TEMPERATURA BAJA, QUE SE MANTIENE CONSTANTE EMPLEANDO LIQUIDOS INERTES QUE ELIMINAN EL CALOR DE LA REACCION POR MEDIO DE SU VAPORIZACION. ESTOS COMPUESTOS SE APLICAN PARA LA OBTENCION DE POLIMEROS. *FORMULA*

公开(公告)号：FR2417501B1

公开(公告)日：1981-01-09

申请号：FR7804571

申请日：1978-02-17

Applicant: ATO CHIMIE

IPC: C07D201/10 ,  C07D201/04 ,  C07D227/08

Abstract: The invention relates to a process for the preparation of lactames according to the so-called "Beckmann rearrangement" which consists in isomerizing oximes in a sulfuric solution, the weight ratio percentage of sulfuric acid to the combined amount of sulfuric acid and water being raised to a value above that of the sulfuric solution feed.

公开(公告)号：CA1056826A

公开(公告)日：1979-06-19

申请号：CA238870

申请日：1975-11-03

Applicant: TEXACO DEVELOPMENT CORP

Inventor： POBER KENNETH W ,  SHULL DON L

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

Abstract: Lactams alone or in combination with terephthalic acid are prepared in a sequence of steps from the carbonyl halide reaction product of a cycloparaffin and phosgene and ultimately, where desired, carbon monoxide and chlorine, by acylation of benzene or an alkyl-substituted benzene with the carbonyl chloride derivative of the cycloparaffin; and reduction and nitrosation of the resulting ketone; or, nitrosation alone, in the event the benzene nucleus is alkyl-substituted, to yield the desired lactam and aromatic acid which latter compound may be oxidized to the desired phthalic acid. I

公开(公告)号：GB1484541A

公开(公告)日：1977-09-01

申请号：GB4995475

申请日：1975-12-05

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 ,  C07D201/06 ,  C07C51/16

公开(公告)号：BE836760A

公开(公告)日：1976-06-17

申请号：BE162849

申请日：1975-12-17

IPC: C07C45/00 ,  C07C45/46 ,  C07C45/62 ,  C07C49/792 ,  C07C51/00 ,  C07C51/27 ,  C07C51/305 ,  C07C61/08 ,  C07C63/26 ,  C07C67/00 ,  C07D201/10 ,  C07D

公开(公告)号：FR2169246B1

公开(公告)日：1976-05-14

申请号：FR7302623

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 ,  C07D41/06 ,  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.