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Application of the Ritter reaction conditions on y-hydroxy-a,P-alkynoic esters, 102, produced ethyl 5-oxazoleacetates 103 or y-A-acylamino-P-keto ester 104 by reaction with aryl or alkyl nitriles respectively. The y-A-acylamino-P-keto ester 104 can also be transformed into oxazole derivatives using an additional step involving POCI3 <06TL4385>. [Pg.299]

See other pages where Esters, hydroxy Ritter reaction is mentioned: [Pg.115] [Pg.146] [Pg.146] [Pg.139] [Pg.135] [Pg.127] [Pg.311]

See also in sourсe #XX -- [ Pg.6 , Pg.268 ]

See also in sourсe #XX -- [ Pg.6 , Pg.268 ]