Synthesis of Tritylones via Cascade Reaction of Arynes with 5-Ethoxyoxazoles
作者:Parul Garg、Ganesh Chandra Upreti、Anand Singh
DOI:10.1021/acs.joc.2c00437
日期:2022.6.3
A cascade reaction involving arynes and 5-ethoxyoxazoles has been developed toward the synthesis of 9-alkyl/aryl tritylones. 5-Ethoxyoxazoles undergo a [4 + 2] cycloaddition reaction with arynes followed by retro-[4 + 2] cycloaddition, a second intermolecular [4 + 2] cycloaddition reaction, and hydrolytic ring cleavage to generate substituted tritylones in good yields. The conversion of tritylone products