Report - SI, annulated BC-REV 3f AND SPECTRA and name · S13 NO2 CNCH2CO2 tBu, DBU THF, i-PrOH, rt, overnight MeO 2C CO Me N H CO2 tBu 47% DMF, POCl3 CH2Cl2, 45 °C, 2 h 90% MeO2C N H CO2

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