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We herein report an improved synthesis of 6-substituted-5H-pyrrolo[2,3-b]pyrazines utilizing microwave heating. The reaction is a palladium-catalyzed heteroannulation process followed by deprotection to yield the desired substrates in good yield.
We herein report the efficient and convenient synthesis of 6-substituted-5H-pyrrolo[2,3-b]pyrazines. The reaction is a palladium-catalyzed heteroannulation process followed by deprotection to yield the desired pyrrolo[2,3-b]pyrazine substrates. The reaction starts with readily accessible N-(3-chloropyrazin-2-yl)-methanesulfonamide and commercially available terminal alkynes and works with aryl- and...
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