No O 26 C ) O HOAC/NaOAC, HCOONa pH = 5.0, 40 °C, 12 h HCOOH CO NEt - 3 No ". 9. DMSO H O § N R3 R2 R1 N OHC 29 Scheme 7.37 CHO. HCOOH, EtsN Me R-NH2 O R-N ...
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