Synthesis of some newer thiazolidinones

Industrial Chemistry Research Lab, Center for Environment, I.S.T., J. N. T. University, Kukatpally,

Hyderabad-500 085, India

E-mail : vpeesapati@yahoo.com

Manuscript received 24 May 2007, revised 26 September 2008, accepted 12 November 2008

Some new 2-[2' -substituted-4' -thiazolidinon-3' -yl]-5,6-dimethyl-8,9-dihydro-10H-benzo[7]annuleno[9,8-d]thiazoles (5a-f) have been synthesized by 1,3-cyclocondensation of thioglycolic acid with 1-substituted-N-(5,6-dimethyl-8,9-dihydro-10H-benzo[7]annuleno[9,8-d]thiazol-2-yl)methanimines (4a-f). The structures of all these compounds have been delineated by elemental analysis and spectral studies (IR, ¹H NMR and Mass).