- A Facile One-Step Multi-Component Approach toward the Synthesis of 3-(2-Amino-4-Thiazolyl)Coumarins by using Trimethylsilyl Isothiocyanate and their Antioxidant and Anti-Inflammatory Activity
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A multi-component synthesis of 3-(2-amino-4-thiazolyl)coumarins has been reported from 3-(2-bromoacetyl)-2H-chromen-2-ones primary amines and using commercially available trimethylsilyl isothiocyanate. The structures of newly synthesized compounds were ch
- Ramagiri, Raj Kumar,Vedula, Rajeswar Rao,Thupurani, Murali Krishna
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- An expedient one-pot tandem method for the synthesis of 3-(2-(phenylamino)thiazol-4-yl)-2H-chromen-2-ones under green conditions
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This paper describes a facile pathway for the one-pot three-component synthesis of 3-(2-(phenylamino)thiazol-4-yl)-2H-chromen-2-ones starting from ethyl-4-chloroacetoacetate by treating it with equimolar amounts of various phenylthioureas independently re
- Kavitha,Srikrishna,Dubey, Pramod Kumar,Aparna
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p. 1913 - 1921
(2019/04/30)
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- PEG-600 mediated one-pot reaction of 3-acetyl-2: H -chromen-2-one with heterylthiols and phenylthioureas using tetrabutylammonium tribromide as an efficient green reagent
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A simple method for the one-pot reaction of 3-acetyl-2H-chromen-2-one with different heterylthiols and phenylthioureas under green conditions using tetrabutylammonium tribromide (TBATB) as an efficient reagent has been described. 3-Acetyl-2H-chromen-2-one
- Srikrishna, Devulapally,Kumar Dubey, Pramod
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p. 5168 - 5175
(2017/07/11)
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- A two-component protocol for synthesis of 3-(2-(substituted phenylamino)thiazol-4-yl)-2H-chromen-2-ones
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An efcient 2-component synthesis of a series of 3-(2-(substituted phenylamino)thiazol-4-yl)-2H-chromen-2- ones (3a-j) was achieved by the reaction of 3-(2-thiocyanatoacetyl)-2H-chromen-2-one (1) with a variety of suitably substituted anilines in 1:1 molar ratio in ethanol. The structures of the products were established by elemental analyses, and UV-vis, FTIR, 1H and 13C NMR, and mass spectroscopy. 3-(2-(4-Methylphenylamino)thiazol-4-yl)-2H-chromen- 2- one (3j) was further characterized by single crystal X-ray diffraction study. This compound, C19H14N2 OS, crystallizes in the orthorhombic space group Pna21, with Z = 4, and unit cell parameters a = 13.0785(11), b = 25.746(2), c = 4.7235(3) A, α=β=γ= 90°. TUeBITAK.
- Saeed, Aamer,Arif, Mubeen,Irfan, Madiha,Bolte, Michael
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p. 383 - 393
(2013/07/26)
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