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Pyrazolones Knoevenagel reaction

Pyrazolones (154) and isoxazolones (155) can also be used in the Knoevenagel reaction. Thus condensations with aliphatic aldehydes, aromatic aldehydes and ketones in the presence of ethylenediammon-ium diacetate or other typical catalysts provide the corresponding alkylidene and benzylidene compounds in good yields (for stereochemistry see Section 1.1A new method involves the use of dicyclohexylcarbodiimide at 20 C without an additional catalyst. ... [Pg.364]

Scheme 2.166. Domino Knoevenagel/hetero-Diels-Alder reaction of pyrazolones... Scheme 2.166. Domino Knoevenagel/hetero-Diels-Alder reaction of pyrazolones...
See other pages where Pyrazolones Knoevenagel reaction is mentioned: [Pg.163]    [Pg.125]    [Pg.163]    [Pg.162]    [Pg.122]    [Pg.10]    [Pg.162]    [Pg.583]   
See also in sourсe #XX -- [ Pg.2 , Pg.364 ]

See also in sourсe #XX -- [ Pg.364 ]

See also in sourсe #XX -- [ Pg.364 ]

See also in sourсe #XX -- [ Pg.2 , Pg.364 ]

See also in sourсe #XX -- [ Pg.364 ]



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