-
公开(公告)号：DE3210706A1
公开(公告)日：1983-10-06
申请号：DE3210706
申请日：1982-03-24
Applicant: BASF AG
Abstract: 2-alkyl-4,4-diacyloxybut-2-enals of the formula I where R1 is alkyl and R2 and R3 are each hydrogen or an aliphatic, cycloaliphatic or aromatic radical, are prepared by a process wherein a 2-alkyl-2,4-diacyloxybut-3-enal of the formula II is treated with an aliphatic carboxylic acid.
-
公开(公告)号：DE3210705A1
公开(公告)日：1983-10-06
申请号：DE3210705
申请日：1982-03-24
Applicant: BASF AG
IPC: C07D307/58 , C07D315/00
-
公开(公告)号：DE3205648A1
公开(公告)日：1983-08-25
申请号：DE3205648
申请日：1982-02-17
Applicant: BASF AG
Inventor： WEITZ HANS-MARTIN DIPL CHEM DR
IPC: C07D301/12 , C07D301/19 , C07D303/04 , C07D301/06
Abstract: Preparation of C3-C10-epoxides by reaction of the corresponding monoolefinic compounds with oxidation products of anthrahydroquinones containing active oxygen in a virtually anhydrous inert organic solvent and in the presence of an epoxidation catalyst, by using for this purpose a supported catalyst which is insoluble in the reaction mixture.
-
公开(公告)号：DE2847068A1
公开(公告)日：1980-05-08
申请号：DE2847068
申请日：1978-10-28
Applicant: BASF AG
IPC: C07C69/16 , B01J23/00 , C07B61/00 , C07C27/00 , C07C27/02 , C07C29/09 , C07C29/136 , C07C29/50 , C07C31/20 , C07C67/00 , C07C67/055 , C07C67/05 , C07C29/00
Abstract: A process for the preparation of butenediol diacetate by reacting butadiene with oxygen and acetic acid or with a compound which liberates acetic acid under the reaction conditions, over a solid catalyst which contains a platinum metal and one or more elements of main group 5 or 6, in the presence of butanediol diacetate, butanediol monoacetate, butanediol or a mixture of these, and the use of the butenediol diacetate, thus obtained, to prepare butane-1,4-diol by hydrogenating and then hydrolyzing the diacetate.
-
公开(公告)号：DE2747657A1
公开(公告)日：1979-05-03
申请号：DE2747657
申请日：1977-10-24
Applicant: BASF AG
IPC: C07C131/02
-
Patent Agency Ranking
公开(公告)号：DE2714799A1
公开(公告)日：1978-10-05
申请号：DE2714799
申请日：1977-04-02
Applicant: BASF AG
Inventor： FISCHER ROLF DIPL CHEM DR , KEMPE UWE DIPL CHEM DR , POHL HANS HENNING DIPL CHEM DR , WEITZ HANS-MARTIN DIPL CHEM DR
IPC: C07C121/30
Abstract: (I), prepn. by reaching butenediol esters, (II), with at least equiv. quantities of HCN at 60-160 degrees C., takes place in aq. solns. of CuBr contg. alkali bromide, under pressures >=2 (pref. 2-20) bar. Mol. ratio CuBr to (II) is (0.3-0.6) : 1. The alkali bromide is esp. NaBr. The aq. solns. pref. also contain NH4Br and up to 10 wt.% HBr. (I) can be hydrogenated to hexamethylene diamine, used in polyamide prodn. On replacing previously used CuCl + alkali halide by CuBr + alkali bromide, yields of (I) can be increased, e.g. from 30% to >80%. Process can be effected economically on a large scale. Aq. solns. are handled more easily than fused salts. (I) is easily separated.
-
公开(公告)号：DE2527490A1
公开(公告)日：1976-12-30
申请号：DE2527490
申请日：1975-06-20
Applicant: BASF AG
IPC: C07D253/10 , C07D253/08
Abstract: New 1,2,4-dihydrotriazine-4-oxides and a new process for the manufacture of 1,2,4-dihydrotriazine-4-oxides by reaction of oximino-cycloalk-1-enes, which are substituted in the 1-position, with hydrazine and ketones. The compounds I are pesticides and starting materials for the manufacture of pesticides.
-
公开(公告)号：DE2516362A1
公开(公告)日：1976-10-28
申请号：DE2516362
申请日：1975-04-15
Applicant: BASF AG
-
公开(公告)号：DE2513998A1
公开(公告)日：1976-10-07
申请号：DE2513998
申请日：1975-03-29
Applicant: BASF AG
Inventor： BROECKER FRANZ JOSEF DIPL CHEM , WEITZ HANS-MARTIN DIPL CHEM DR , MAROSI LASZLO DIPL CHEM DR , HARTIG JUERGEN DIPL CHEM DR
IPC: B01J23/755 , C07C69/16 , B01J23/76
Abstract: Process for prepn. of butanediol-1,4-diacetate, (I), by hydrogenation of trans-butene-2-diol-1,4-diacetate (II), or mixtures contg. (II), uses a catalyst (IV) contg. Ni and Al oxide, which can be prepd. from the cpd. Ni6Al2(OH)16CO3.4H2O, (III), by heating and reduction. (I) is a starting material for prodn. of butanediol and tetrahydrofuran and can also be used for incorporating the butanediol gp. into other cpds. Hydrogenation of the trans-isomer, or of cis-trans-isomer mixt., proceeds smoothly, under mild conditions with sufficiently high catalyst loading. (IV) has higher activity than Raney Ni, already at lower temps.
-
公开(公告)号：DE2421408A1
公开(公告)日：1975-11-13
申请号：DE2421408
申请日：1974-05-03
Applicant: BASF AG
IPC: C07C69/16 , B01J23/00 , B01J23/44 , B01J23/64 , B01J27/00 , B01J27/02 , B01J27/18 , C07B61/00 , C07C20060101 , C07C67/04 , C07C67/05 , C07C69/28
Abstract: 1501004 Oxidative esterification catalysts BASF AG 2 May 1975 [3 May 1974] 18368/75 Heading B1E [Also in Division C2] A catalyst composition comprising palladium and at least one element, phosphorus, arsenic, antimony, bismuth, selenium and tellurium is used for the preparation of butenediol diacetate by reaction of butadiene with oxygen and acetic acid. The catalyst may be supported on a carrier e.g. active charcoal, silica gel, silicic acid, alumina, clay, bauxite, magnesia, kieselguhr and pumice. The carrier may be introduced into mixed solutions of the salts followed by evaporation and reduction, or a precipitant e.g. alkali metal hydroxide, is added followed by reduction. Examples describe the evaporation and reduction of palladium chloride and tellurium dioxide on active charcoal.
-
-
-
-
-
-
-
-
-
Search Results
79
records
(took 0.025 seconds)
