Room-temperature ionic liquid–DMSO promoted and improved one-pot synthesis of 5, 6-diaryl-1, 2, 4-triazines

RS Tamboli, R Giridhar, HM Mande…

Index: Tamboli, Riyaj S.; Giridhar, Rajani; Mande, Hemant M.; Shah, Shailesh R.; Yadav, Mange Ram Synthetic Communications, 2014 , vol. 44, # 15 p. 2192 - 2204

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Abstract

An improved and rapid one-pot synthesis of 5,6-diarylsubstituted-1,2,4-triazines in a mixture of room-temperature ionic liquid 1,3-dibutylimidazolium bromide [Bbim] + Br − and dimethylsulfoxide (DMSO) is described without the need for any added catalyst. Different polar aprotic solvents were screened along with ionic liquids and a synergistic effect with DMSO has been found. The predominance of one regioisomer over the other has also been studied with varying ...

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