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A green and facile synthesis of an industrially important quaternary heterocyclic intermediates for baricitinib
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Baricitinib, with a 2-(1-(ethylsulfonyl)azetidin-3-yl)acetonitrile moiety at N-2 position of the pyrazol skeleton, is an oral and selective reversible inhibitor of the JAK1 and JAK2 and displays potent anti-infammatory activity. Several research-scale synthetic methods have been reported for the preparation of key quaternary heterocyclic intermediates of baricitinib. | A green and facile synthesis of an industrially important quaternary heterocyclic intermediates for baricitinib