Using 60 equiv a 1.2:1 exo : endo ratio was obtained (entry 7), lowering the equivalents below 20 displayed a clear trend for increased exo : endo ratio with decreasing quantities of NMM, albeit at the expense of 2 (entries 8–10).
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Photoredox catalysis in a complex pharmaceutical setting: toward the preparation of JAK2 inhibitor LY2784544.
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