Regioselective Synthesis of Thieno[2,3-b]quinolin-4(9H)-ones: Occurrence of Thermal [1,3] Sigmatropic Rearrangement.
作者:K. C. Majumdar、M. Ghosh、M. Jana
DOI:10.1055/s-2002-23545
日期:——
A number of hitherto unreported thieno[2,3-b]quinolin-4(9H)-ones 5a-f have been regioselectively synthesized from the corresponding 4-(prop-2-ynyloxy)quinolin-2(1H)-thiones 4a-f. The 4-(Prop-2-ynyloxy)quinolin-2(1H)-thiones 4a-f were prepared by the thionation of 4-(prop-2-ynyloxy)quinolin-2(1H)-ones 3a-f. The latter compounds were in turn prepared by the alkylation of 4-hydroxyquinolin-2(1H)-one (1)