Iron fluoride: the most efficient catalyst for one-pot synthesis of 4H-pyrimido[2,1-b]benzothiazoles under solvent-free conditions |
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Authors: | Amol B Atar Yong Seok JeongYeon Tae Jeong |
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Institution: | Department of Image Science and Engineering, Pukyong National University, Busan 608-737, Republic of Korea |
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Abstract: | A new iron fluoride assisted convenient and efficient strategy for the preparation of 4H-pyrimido2,1-b]benzothiazoles derivatives in solvent-free media is described. The reactions can be performed at low-catalyst loadings with excellent functional group tolerance. The catalyst can be readily recovered and reused for next reaction for at least three runs without any significant impact on the yields of the products. The easy recovery of the catalyst and high yield of the products make the protocol attractive, sustainable, and economic. |
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Keywords: | 4H-Pyrimido[2 1-b]benzothiazoles Iron fluoride One-pot Solvent-free Biginelli reaction |
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