1,721,013 research outputs found
A new synthesis of b-phenylamino thioesters and beta-lactams via base-induced ring-opening of 2-phenyl-3-aryl-5-phenylthioisoxazolidines
No full textSelective reduction of aldehydes to the corresponding primary alcohols by lithium enolate of acetaldehyde
No full textSynthesis of 3-aryl-4,5-dihydro-5-hydroxy-1,2-oxazoles by reaction of substituted benzonitrile oxides with the enolate ion of acetaldehyde
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Cinnamaldehydes Via Hydroxyisoxazolidines: an Efficient Indirect Crossed Aldol Condensation
No full textReattività di Nitroni con lo Ione Enolato dell’Acetaldeide: Sintesi di idrossiisossazolidine
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Reaction of 3-phenylisoxazole with alkyllithiums
No full textAlkyllithiums react with 3-phenylisoxazole giving C5–H abstraction followed either mainly by ring fragmentation to benzonitrile and ethynolate ion (in the case of t-BuLi) or (less hindered alkyllithiums: n-BuLi, EtLi, MeLi) also by formation of alkylated enaminones. Appreciable amounts of 2-alkyl-4,6-diphenylpyrimidines have also been isolated for certain alkyllithiums (EtLi and MeLi). This is at variance with the reported behaviour with hindered lithium amides (LTMP) for which only C5–H abstraction followed by ring fragmentation was described. The mechanistic significance of the observed results is discussed
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