hydrogenchloride; hydrogen; palladium on activated charcoal in methanol

1: 99 percent / diphenyl phosphorazidate, triethylamine / dimethylformamide / 17 h / 0 - 20 °C 2: 87 percent / trifluoroacetic acid (TFA) / CH2Cl2 / 0.75 h / 0 - 20 °C 3: 96 percent / pyridine 4: 95 percent / diphenyl phosphorazidate, triethylamine / dimethylformamide / 17 h / 0 - 20 °C 5: 100 percent / trifluoroacetic acid (TFA) / CH2Cl2 6: 91 percent / pyridine / 12 h 7: H2, HCl / 10percent Pd/C / methanol View Scheme

1: 95 percent / diphenyl phosphorazidate, triethylamine / dimethylformamide / 17 h / 0 - 20 °C 2: 100 percent / trifluoroacetic acid (TFA) / CH2Cl2 3: 91 percent / pyridine / 12 h 4: H2, HCl / 10percent Pd/C / methanol View Scheme

1: 91 percent / pyridine / 12 h 2: H2, HCl / 10percent Pd/C / methanol View Scheme

1: 100 percent / trifluoroacetic acid (TFA) / CH2Cl2 2: 91 percent / pyridine / 12 h 3: H2, HCl / 10percent Pd/C / methanol View Scheme

1: 99 percent / diphenyl phosphorazidate, triethylamine / dimethylformamide / 17 h / 0 - 20 °C 2: 87 percent / trifluoroacetic acid (TFA) / CH2Cl2 / 0.75 h / 0 - 20 °C 3: 96 percent / pyridine 4: 95 percent / diphenyl phosphorazidate, triethylamine / dimethylformamide / 17 h / 0 - 20 °C 5: 100 percent / trifluoroacetic acid (TFA) / CH2Cl2 6: 91 percent / pyridine / 12 h 7: H2, HCl / 10percent Pd/C / methanol View Scheme

1: 96 percent / pyridine 2: 95 percent / diphenyl phosphorazidate, triethylamine / dimethylformamide / 17 h / 0 - 20 °C 3: 100 percent / trifluoroacetic acid (TFA) / CH2Cl2 4: 91 percent / pyridine / 12 h 5: H2, HCl / 10percent Pd/C / methanol View Scheme

1: 87 percent / trifluoroacetic acid (TFA) / CH2Cl2 / 0.75 h / 0 - 20 °C 2: 96 percent / pyridine 3: 95 percent / diphenyl phosphorazidate, triethylamine / dimethylformamide / 17 h / 0 - 20 °C 4: 100 percent / trifluoroacetic acid (TFA) / CH2Cl2 5: 91 percent / pyridine / 12 h 6: H2, HCl / 10percent Pd/C / methanol View Scheme

1: Py 2: acetic anhydride / 5 h / 95 - 100 °C 3: (i) H2, Pd-C, MeOH, (ii) /BRN= 898057/ 4: H2, aq. HCl / Pd-C / methanol View Scheme

1: aq. NH4Cl, Zn / ethanol 2: Py 3: acetic anhydride / 5 h / 95 - 100 °C 4: (i) H2, Pd-C, MeOH, (ii) /BRN= 898057/ 5: H2, aq. HCl / Pd-C / methanol View Scheme