Multi-step reaction with 4 steps
1: 1.) DCC, HONB; 2.) NMM, Et3N, TFA / 1.) THF-DMF, 4 h; 2.) DMF, overnight
2: 1.) DCC, HOSu; 2.) NMM, Et3N, TFA / 1.) THF, 5 h; 2.) DMF, overnight
3: 95 percent / trimethylphenylthiosilane / dimethylformamide / 0.25 h / 40 °C
4: 6 percent / 1 M TFMSA-thioanisole, EDT / trifluoroacetic acid / 2 h
With
4-methyl-morpholine; 1-hydroxy-pyrrolidine-2,5-dione; ethylenediaminetetraacetic acid; trifluorormethanesulfonic acid; methyl-phenyl-thioether; phenylthiotrimethylsilane; triethylamine; dicyclohexyl-carbodiimide; (3aR,4R,7S,7aS)-2-hydroxy-3a,4,7,7a-tetrahydro-1H-4,7-methanoisoindole-1,3(2H)-dione (N-hydroxy-5-exo-norbornene-2,3-dicarboximide); trifluoroacetic acid;
In
N,N-dimethyl-formamide; trifluoroacetic acid;