Multi-step reaction with 4 steps
1: acetic acid; zinc / 12 h / 100 °C
2: dichlorobis(tri-O-tolylphosphine)palladium; potassium carbonate / water; N,N-dimethyl-formamide / 12 h / 80 °C / Inert atmosphere
3: 6,7,9,10,12,13,20,21-octahydrodibenzo[b,h][1,4,7,10,13,16]hexaoxacyclooctadecine; sodium hydride / tetrahydrofuran; ethanol / 12 h / 60 °C
4: triethylamine; trifluoroacetic acid / isopropyl alcohol / 3 h / 80 °C
With
dichlorobis(tri-O-tolylphosphine)palladium; 6,7,9,10,12,13,20,21-octahydrodibenzo[b,h][1,4,7,10,13,16]hexaoxacyclooctadecine; sodium hydride; potassium carbonate; acetic acid; triethylamine; trifluoroacetic acid; zinc;
In
tetrahydrofuran; ethanol; water; N,N-dimethyl-formamide; isopropyl alcohol;
DOI:10.1021/jm2011645