Synthesis, spectral studies and biological evaluation of some new 4-substituled coumarins

1548-15504-Dichloroacetamidomethycoumarins 3, 4-2' -naphtho furanyl coumarins 4, 4-2'-benzofurany l coumarins 5 and 4-8' angelicinylcoumarins 6, have been synthesised by using 4-bromomethylcoumarins 1 as synthons. Molecular weights of the compounds have been confirmed by EI and FAB-MS techniques and studied for their antimicrobial activities