Synthesis of 4-Quinolones:<i>N</i>,<i>O</i>-Bis(trimethylsilyl)acetamide-Mediated Cyclization with Cleavage of Aromatic C-O Bond
作者:Ondřej Píša、Stanislav Rádl
DOI:10.1002/ejoc.201600178
日期:2016.5
4-dihydro-4-oxoquinoline derivatives (4-quinolones) based on a BSA [N,O-bis(trimethylsilyl)acetamide]-mediated cyclization of substituted 1-(2-methoxyphenyl)-3-(alkyl/arylamino)prop-2-en-1-ones is described. The reaction belongs to a rare set of cyclizations in which a methoxy group serves as the leaving group. Reaction takes place by the action of silylating agent under mild conditions and provides high yields of pure