Noncovalent solid-phase organic synthesis

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    A novel solid-phase synthesis methodology of N-substituted-2-aminothiazolo[4,5-b]pyrazine derivatives was developed. The key step in this synthesis strategy is tandem reaction of isothiocyanate terminated resin 2 with o-halo-2-aminopyrazine, affording cyclized 2-aminothiazolo[4,5-b]pyrazine resin 4. To increase the diversity of our library, Suzuki coupling reaction was performed at the position C6. Further functionalization of 2-aminothiazolo[4,5-b]pyrazine core skeleton with various electrophiles such as alkyl halides, acyl chlorides, and sulfonyl chlorides and cleavage from the resin with TFA in DCM generated N-alkyl-, N-acyl-, and N-sulfonyl-2-aminothiazolo[4,5-b]pyrazine derivatives. This synthetic strategy can efficiently provide a library…

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    Green Synthesis of Ibuprofen Green Chemistry is a new approach and perspective of chemistry that can improve human lives and maximize efficiency. It is a branch in chemistry that explores and examines techniques to reduce and eliminate hazardous and harmful substances. These harmful substances effect humans and the environment in multiple ways, the twelve principles of Green Chemistry can help minimize them. The twelve principles include prevention of waste, the design of less hazardous…

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