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Abstract The reaction of 2-phenyl benzoxazine with p-amino phenol and ethanol amine lead to formation of quinazolinones 2, 7 that used as chiral auxiliaries. The reaction of these quinazolinones with different carboxylic acid derivatives lead to formation of quinazolinone esters 3,8 which deprotonated with LCHIPA at very low different temperatures followed by alkylation with different alkyl halide to give quinazolinone α-alkylated esters 4, 9. The hydrolysis of these esters lead to formation of α- alkylated acids 5, 10 with high enantiomeric purity. |