1: 70 percent / K2CO3 / acetone / 24 h / Heating 2: SOCl2 / Heating 3: NH4OH / dioxane / 1 h View Scheme

1: SOCl2 / Heating 2: NH4OH / dioxane / 1 h View Scheme

piperidine; tributylphosphine; Rapp TentaGel S RAM Fmoc resin; 1,1'-Azobis(N,N-dimethylformamide); trifluoroacetic acid 1.) DMF, EDC, 2 h, 2.) THF, CH2Cl2, room temp., 3.) H2O; Yield given. Multistep reaction;