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2- Methyl-3-butenoic acid

In the first reports on the use of esters of 4-bromo-2-butenoic acid (191a and b, crotonic acid) and of 4-bromo-3-methyl-2-butenoic acid (191c, senecioic acid), the corresponding Reformatsky reactions with benzaldehyde were performed with the old-fashioned procedure, which required heating the haloester, the aldehyde and granulated zinc in benzene/ether mixtures at reflux temperature. [Pg.849]

Bromo-4-methoxy- 3-Methyl-2-butenoic acid benzoic acid... [Pg.518]

C5H5F302 4,4,4-trifluoro-3-methyl-2-butenoic acid 93404-33-2 25.00 1.3180 1 4522 C5H6N202S 1 -acetyl-2-thiohydantoin 584-26-9 25.00 1.3667 2... [Pg.216]

C5H802 3-methyl-2-butenoic acid 541-47-9 21.107 103.841 1,2 5054 C5H9CI 1 -chloro-2-methyl-2-butene 13417-43-1 18.622 112.799 1,2... [Pg.604]

Methyl-2-butenoic acid (lR,2S)-2-Chloro-l,2-diphenylethyl Ester ... [Pg.592]

Binapacryl. 3-Methyl-2-butenoic acid 2-(i-meth-ylpropyl)-4,6-dinitrophenyl ester 3-methylcrotonic acid 2-seC butyl-4,6-dinitrophenyi ester 2-sec-butyl-4,6-dinitro-phenyi 3,3-dimethylacrylate 2-sec-butyl-4,6-dinitrophenyl 3-methyl-2-butenoate 2 sec-butyl-4,6-dinilrophenyl 3-methylcrotonate 2 -see-butyl-4,6-dinitrophenyl senecioate 3,3-dimethylacrylic acid 2-sec-butyl-4,6-dinitrophenyl es. ter 4,6-dinitro-2-sec-butylphenyl P,P-dimethylacrylate 3-methyl-2-butenoic acid 2-sec-butyl-4,6-diniirophenyl ester dinoseb methacrylate senecioic aeid 2-sec-butyl-4,6-dinitrophenyl ester ENT 25793 HOE 2784 Acricid Am-box Endosan Morocide Niagara 9044. mol... [Pg.190]

Ketones can also be condensed with malonic acid by the Knoevenagel method for example, 3-methyl-2-butenoic acid is formed in 60% yield when malonic acid is heated with acetone in pyridine containing a little piperidine 909 when diethyl ketone is used in this synthesis the yield falls to 35%, and the reaction fails (yield 5%) with cyclohexanone. However, in such cases condensation of ketones with malonic acid is successful if piperidine acetate is used as catalyst. [Pg.984]

Unsaturated acids can also be obtained in this way, by hypohalite oxidation of a,/ -unsaturated methyl ketones 3-methyl-2-butenoic acid has thus been obtained from mesityl oxide,136 and 5-phenyl-2,4-pentadienoic acid in 70% yield from cinnamylideneacetone 137... [Pg.1042]

A mixture of 3-methyl-3-butenoic acid (10 g), anhydrous ether (20 ml), and 90% sulfuric acid (10 g) is set aside at room temperature for 24 h. Then dilution with water and the usual working up gives 3-methyl-2-butenoic acid (9.7 g, 97%), m.p. 68-70°. [Pg.1056]

Resorcinol and 3-methyl-2-butenoic acid added simultaneously with rapid stirring to methanesulphonic acid and phosphorus pentoxide at 70°C, with continuance of stirring for 30 minutes, resulted in a 94% yield of... [Pg.303]

See other pages where 2- Methyl-3-butenoic acid is mentioned: [Pg.885]    [Pg.618]    [Pg.2350]    [Pg.262]    [Pg.1154]    [Pg.321]    [Pg.133]    [Pg.154]    [Pg.618]    [Pg.294]    [Pg.829]    [Pg.2350]    [Pg.195]    [Pg.4]    [Pg.631]    [Pg.11]    [Pg.479]    [Pg.15]    [Pg.119]    [Pg.217]    [Pg.322]    [Pg.426]    [Pg.428]    [Pg.558]    [Pg.699]    [Pg.11]    [Pg.723]    [Pg.723]    [Pg.433]    [Pg.129]    [Pg.593]    [Pg.70]    [Pg.195]    [Pg.114]   
See also in sourсe #XX -- [ Pg.133 ]

See also in sourсe #XX -- [ Pg.630 ]

See also in sourсe #XX -- [ Pg.630 ]



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Butenoic 3-methyl

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