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2.3- alkadienoic acid

Ma S, Wu B, Shi Z (2004) An efficient synthesis of 4-halo-5-hydroxyfuran-2(5H)-ones via the sequential halolactonization and y-hydroxylation of 4-aryl-2, 3-alkadienoic acids. J Org Chem 69 1429-1431... [Pg.89]

Carbonylation of propargyl acetates and phosphates proceeds in the presence of bases under somewhat harsh conditions (100 °C, 50 atm). Carbonylation of the propargylic acetate 49, carried out under mild conditions (latm, 55 °C) in a two-phase system of aqueous NaOH and 4-methyl-2-pentanone in the presence or absence of tetrabutylammonium bromide, gave 2,3-alkadienoic acid 50 (Scheme 11-16). Carbonylation of propargyl bromide (51) in methanol in the presence of triethylamine or diethylamine under pressure... [Pg.512]

Butenolides are obtained by the reaction of 2,3-alkadienoic acids catalyzed by Pd(0) in the presence of Ag2C03 as shown by the transformation of 404 to... [Pg.163]

See other pages where 2.3- alkadienoic acid is mentioned: [Pg.2023]    [Pg.2023]    [Pg.2023]    [Pg.2023]    [Pg.2023]    [Pg.2023]    [Pg.2023]    [Pg.2023]    [Pg.2023]    [Pg.2023]    [Pg.2023]    [Pg.2023]    [Pg.243]    [Pg.2023]    [Pg.2023]    [Pg.2023]    [Pg.2023]    [Pg.2023]    [Pg.2108]    [Pg.2448]    [Pg.1076]    [Pg.2335]    [Pg.2335]    [Pg.2335]    [Pg.2335]    [Pg.2335]    [Pg.462]   
See also in sourсe #XX -- [ Pg.461 ]

See also in sourсe #XX -- [ Pg.461 ]



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2- -2,5-alkadienoic acid 2-alkyn

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