Regioselective Lithiation of Chiral 3-Acylamino-2-alkylquinazolin-4(3<i>H</i>)-ones: Application in Synthesis
作者:Keith Smith、Gamal A. El-Hiti、Mohamed F. Abdel-Megeed
DOI:10.1055/s-2004-829169
日期:——
mixture was reacted in refluxing toluene, the 3-acylamino- derivatives were obtained in good yields based on the acid chloride. Lithiation of the 3-acylamino-2-alkylquinazolin-4(3H)-ones was achieved by the use of LDA in anhydrous THF at -78 °C and the reaction was regioselective at the carbon α to position 2 of the quinazolin- 4(3H)-one moiety. The dilithio reagents thus obtained reacted with electrophiles