108107-64-8Relevant articles and documents
CONDENSATION OF 2-PHENYL-2-OXAZOLIN-5-ONE WITH o-HYDROXYACETOPHENONEIMINES
Tripathy, Pradeep K.,Mukerjee, Arya K.
, p. 1517 - 1520 (2007/10/02)
Condensation of 2-phenyl-2-oxazolin-5-one (1) with N-aryl-o-hydroxyacetophenoneimines (2a,b) gave the corresponding dihydrocoumarins (5).On the other hand, the reaction of 1 with 2 (Y = C6H11N or n-BuN) afforded 3-N-benzoylamino-4-methylcoumarin (6) which underwent hydrolysis to give 3-amino-4-methylcoumarin (9) or 3-hydroxy-4-methylcoumarin (10), depending on the acidic or basic condition and the reaction temperature.