[BMIM] BF4: AN EFFICIENT IONIC LIQUID MEDIUM FOR THE SYNTHESIS OF 1, 2, 4-TRIAZINE DERIVATIVES

A series of new (Z)-3-allkyl-5(benzylidene/substituted benzylidene)-2N-(carbothioamido)-6-oxo-1,2,5,6-tetrahydro-1-NH-1,2,4-triazine derivatives have been synthesized in [BMIM] BF4 as ionic liquid without catalyst for 30-40 min at 65-70 oC with good yields. This method has the remarkable advantages of good yields, straightforward protocol, being environmentally friendly, short reaction times and mild reaction condition. Here the need for catalyst and solvent are avoided by using the catalytically active ionic liquid as medium.