E. Okada et al., Aromatic nucleophilic N-N, N-S and N-O exchange reactions: Efficient synthesis of 5,7-bis (trifluoroacetyl)-8-quinolylamines, sulfides and ethers, SYNTHESIS-S, (2), 2000, pp. 237-242
Various 5,7-bis(trifluoroacetyl)-8-quinolylamines sulfides and ethers were
synthesized in excellent yields by aromatic nucleophilic N-N, N-S and N-O e
xchange reactions of N,N-dimethyl-5,7-bis(trifluoroacetyl)-8-quinolylamine
with amines, thiols and alcohols. Base-catalyzed cyclization of the resulti
ng benzyl 8-quinolyl sulfide and subsequent dehydration gave fluorine-conta
ining thieno[3,2-h]quinolines in high yields.