Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Maleic dichloro

P4ALEIC ANHYDRIDE, MALEIC ACID AND FUMARIC ACID] (Vol 15) 9a,21-dichloro-17-[(2-furanyl-carbonyl)oxyl]-llb-hydroxy-16a-methyl-pregna-l,4-diene-3,20-dione. See Mometasone fluroate. [Pg.304]

Acid Chloride Formation. Monoacid chlorides of maleic and fumaric acid are not known. Treatment of maleic anhydride or maleic acid with various reagents such as phosgene [75-44-5] (qv), phthaloyl chloride [88-95-9] phosphoms pentachloride [10026-13-8] or thionyl chloride [7719-09-7] gives 5,5-dichloro-2(5JT)furanone [133565-92-1] (4) (26). Similar conditions convert fumaric acid to fumaryl chloride [627-63-4] (5) (26,27). NoncycHc maleyl chloride [22542-53-6] (6) forms in 11% yield at 220°C in the reaction of one mole of maleic anhydride with six moles of carbon tetrachloride [56-23-5] over an activated carbon [7440-44-4] catalyst (28). [Pg.449]

Feoktistov and coworkers 57) found a third mode of reactivity in a closely related system. The electrochemical reduction of the diethyl esters of dichloro-maleic (56) and dichlorofumaric (57) acid was studied. Neither afforded the corresponding acetylene. [Pg.22]

A range of reactions of 2-chlorocyclohexyl(dichloro)phosphine (60) with alcohols and epoxides has been described, largely with a view to the synthesis of polymer intermediates and flame-retardants.50 The copolymerization of dichloro(phenyl)-phosphine with styrene and vinyl butyl ether in the presence of maleic anhydride has been studied.61... [Pg.59]

EINECS 203-468-6, see Ethylenediamine EINECS 203-470-7, see Allyl alcohol EINECS 203-472-8, see Chloroacetaldehyde EINECS 203-481-7, see Methyl formate EINECS 203-523-4, see 2-Methylpentane EINECS 203-528-1, see 2-Pentanone EINECS 203-544-9, see 1-Nitropropane EINECS 203-545-4, see Vinyl acetate EINECS 203-548-0, see 2,4-Dimethylpentane EINECS 203-550-1, see 4-Methyl-2-pentanone EINECS 203-558-5, see Diisopropylamine EINECS 203-560-6, see Isopropyl ether EINECS 203-561-1, see Isopropyl acetate EINECS 203-564-8, see Acetic anhydride EINECS 203-571-6, see Maleic anhydride EINECS 203-576-3, see m-Xylene EINECS 203-598-3, see Bis(2-chloroisopropyl) ether EINECS 203-604-4, see 1,3,5-Trimethylbenzene EINECS 203-608-6, see 1,3,5-Trichlorobenzene EINECS 203-620-1, see Diisobutyl ketone EINECS 203-621-7, see sec-Hexyl acetate EINECS 203-623-8, see Bromobenzene EINECS 203-624-3, see Methylcyclohexane EINECS 203-625-9, see Toluene EINECS 203-628-5, see Chlorobenzene EINECS 203-630-6, see Cyclohexanol EINECS 203-632-7, see Phenol EINECS 203-686-1, see Propyl acetate EINECS 203-692-4, see Pentane EINECS 203-694-5, see 1-Pentene EINECS 203-695-0, see cis-2-Pentene EINECS 203-699-2, see Butylamine EINECS 203-713-7, see Methyl cellosolve EINECS 203-714-2, see Methylal EINECS 203-716-3, see Diethylamine EINECS 203-721-0, see Ethyl formate EINECS 203-726-8, see Tetrahydrofuran EINECS 203-729-4, see Thiophene EINECS 203-767-1, see 2-Heptanone EINECS 203-772-9, see Methyl cellosolve acetate EINECS 203-777-6, see Hexane EINECS 203-799-6, see 2-Chloroethyl vinyl ether EINECS 203-804-1, see 2-Ethoxyethanol EINECS 203-806-2, see Cyclohexane EINECS 203-807-8, see Cyclohexene EINECS 203-809-9, see Pyridine EINECS 203-815-1, see Morpholine EINECS 203-839-2, see 2-Ethoxyethyl acetate EINECS 203-870-1, see Bis(2-chloroethyl) ether EINECS 203-892-1, see Octane EINECS 203-893-7, see 1-Octene EINECS 203-905-0, see 2-Butoxyethanol EINECS 203-913-4, see Nonane EINECS 203-920-2, see Bis(2-chloroethoxy)methane EINECS 203-967-9, see Dodecane EINECS 204-066-3, see 2-Methylpropene EINECS 204-112-2, see Triphenyl phosphate EINECS 204-211-0, see Bis(2-ethylhexyl) phthalate EINECS 204-258-7, see l,3-Dichloro-5,5-dimethylhydantoin... [Pg.1482]

Isopropenylbenzofuran (124, Scheme 30) affords good yields of the adducts 123 and 125 on separate reaction with maleic anhydride and tetracyanoethylene. With but-3-en-2-one, 2-isopropenylbenzofuran (124, Scheme 31) affords the adducts 126 and 127 in a combined yield of 29%. When the crude product was dehydrogenated with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone in boiling benzene, the aromatized product 128 (6%) was obtained. It was accompanied by the dicyanodibenzofuran 129, which was found to arise from the excess diene present in the reaction mixture. A speculative mechanism is shown. [Pg.36]

Maleic thioanhydride and its dichloro derivative function as dienophiles. Cycloaddition with cyclopentadiene and butadiene has been reported (Scheme 155) (72AHC(14)33l). Succinic thioanhydride undergoes bis-Wittig condensations (Scheme 156) the product from ethoxycarbonylmethylenetriphenylphosphorane aromatizes to the thiophene-2,5-bis-acetic ester (454) (75LA1967). [Pg.824]

Maleic anhydride (117) belongs to the first compounds, the [2 + 2]-photocycloaddi-tion reactions of which were extensively explored [112]. It is preferably converted to the corresponding cyclobutanes by irradiation in the presence of a sensitizer, for example, benzophenone, allowing the addition of a plethora of alkenes (Scheme 6.42). In a recent application the photocydoaddition product 118 of maleic anhydride and l,4-dichloro-2-butene was converted into the marine alkaloid ( )-sceptrin (119) [113]. [Pg.196]

Dichloro 4 iodo phenol iodofenphos Dichloro isopropoxy phenyl hydrazine oxadiazon Dichloro maleic anhydride fluoramide... [Pg.1033]

Hydrazine bisthiosemi, clethodim, clofentezine, diclomazine, difenzoquat, ferimzone, flupoxam, maleic hydrazide, metamitron, methidathion, metribuzin, pymetrozine, tebuthiuron, thiazafluron, triclopyr Hydrazine (acetyl) metamitron Hydrazine (tertiobutyl) tebufenozide Hydrazine (p.tertio butyl benzyl) pyridaben Hydrazine (2.4 dichloro phenyl) sulfentrazone Hydrazine (dimethyl) daminozide Hydrazine (2.6 dimethyl phenyl) oxadixyl... [Pg.1038]

Fig. 6. A proton-sponge (a) l,8-Bis(dimethylamino)napthalene in the pristine form (b) after protonation using 1,2-dichloro maleic acid. The contour maps of the corresponding Laplacians are shown at logarithmic intervals in (c) and (d), respectively (reproduced with permission from Mallinson et al. [56,57]). Fig. 6. A proton-sponge (a) l,8-Bis(dimethylamino)napthalene in the pristine form (b) after protonation using 1,2-dichloro maleic acid. The contour maps of the corresponding Laplacians are shown at logarithmic intervals in (c) and (d), respectively (reproduced with permission from Mallinson et al. [56,57]).
Pyridazine can be obtained in reasonable yield from the readily available maleic hydrazide (7) which is converted into 3,6-dichloro-pyridazine (8) and upon hydrogenolysis of both chlorine atoms pyridazine is formed. Hydrogenolysis over palladium-charcoal catalyst in the presence or absence of sodium hydroxide at atmospheric pressure gives pyridazine in low yield. If the catalytic hydrogenation is performed under pressure and in the presence of ammonia or in aqueous methanolic ammonia solution at ordinary pressure, pyridazine can be obtained in 60 and 67.5% yield, respectively. [Pg.214]

SYNS ALDEHYDODICHLOROMALEIC ACID 2-BUTENOIC ACID, 2.3-DICHLOR-4-OXO-, (Z)-(9CI) a-p-DICHLORO-P-FORMYL ACRYLIC ACID Q 3,4-DICHL-ORO-2-HYDROXYCROTONOLACTONE 3,4-DICHD ORO-2-HYDROXYCROTONOLACTONIC ACID DI-CHLOROMALEALDEHYDIC ACID 2,3-DICHLORO-MALEIC ALDEHYDE ACID 2.3-DICHLORO-4-OXO-2-BUTENOIC ACID KYSELINA MUKOCHLOROVA MALEALDEHYDIC ACID, DICHLORO-4-OXO-, (ZH9CI)... [Pg.971]

Acetic acid, dichloro 11.0 Maleic acid anhydride 13.6... [Pg.484]

Many (benzo)pyridazines are made from 1,4-diketo compounds, and the industrial supply of, for example, maleic and phthalic anhydrides and mucohalic acids make them attractive and widely used starting materials, which can be used in conjunction with substituted hydrazines to give a range of A-substituted derivatives. Some other 1,4-diketo compounds are commercially available on a smaller scale, including, for example, certain 3-benzoylpropionic acids from which 6-aryl-4,5-dihydro-3(2//)-pyridazinones can be prepared. When such precursors are not commercially available then ease and scope of synthetic approaches to the starting materials must be considered, but for established routes, such as 6-aryl-4,5-dihydro-3(2//)-pyridazinones from 3-aroylpropionic acids, a variety of synthetic methods have been developed so that a wide range of (substituted)aroyl derivatives can be prepared. Synthetically useful preformed (benzo)pyridazine derivatives that are commercially available include 4,5-dichloro-3(2F/)-pyridazinone, 3,6-dichloropyridazine, and 1,4-dichlorophthalazine. [Pg.84]

See other pages where Maleic dichloro is mentioned: [Pg.465]    [Pg.102]    [Pg.46]    [Pg.125]    [Pg.1221]    [Pg.516]    [Pg.147]    [Pg.37]    [Pg.233]    [Pg.1258]    [Pg.388]    [Pg.142]    [Pg.1355]    [Pg.37]    [Pg.450]    [Pg.186]    [Pg.214]    [Pg.450]    [Pg.388]    [Pg.134]    [Pg.223]    [Pg.267]    [Pg.270]    [Pg.584]    [Pg.710]    [Pg.954]    [Pg.955]    [Pg.956]    [Pg.958]    [Pg.959]    [Pg.963]    [Pg.121]   
See also in sourсe #XX -- [ Pg.116 ]



SEARCH



© 2024 chempedia.info