1 Sentences With "underdoes"

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3-Hydroxyphthalide reacts with thionyl chloride at the hydroxyl group smoothly (80-90% yield) to 3-chlorophthalide. With Grignard reagents, the hydroxy group can be exchanged for the corresponding alkyl or aryl group: Reaktion von 3-Hydroxyphthalid mit Grignard-Verbindungen In the presence of (+)-cinchonine, in the reaction of (racemic) 3-hydroxyphthalide with carboxylic acid anhydrides to the corresponding chiral 3-substituted phthalides anenantiomeric excess of up to 90% ee can be achieved besides high product yields. An alternative approach to (racemic) 3-substituted phthalides with high yields is opened up by the reaction of 2-carboxybenzaldehyde and β-keto acids in the presence of base 4-anisidine in glycerol as solvent. Reaktion von 3-Hydroxyphthalid mit β-Ketosäuren 2-Carboxybenzaldehyde underdoes a double condensation reaction with hydrazine or alkylhydrazines, 1(2H)-phthalenazinones are obtained under acid catalysis with K10-montmorillonite and microwave irradiation in high yield.