Multi-step reaction with 6 steps
1.1: N,N,N',N'-tetramethylguanidine / N,N-dimethyl-formamide / 0.5 h / 20 °C / Inert atmosphere
1.2: 18 h / 20 °C / Inert atmosphere
2.1: triethylamine / N,N-dimethyl-formamide / 1.5 h / 20 °C / Inert atmosphere
3.1: chloro-trimethyl-silane; sodium iodide / acetonitrile / 0.08 h / 20 °C / Inert atmosphere
3.2: 2.08 h / 0 - 20 °C / Inert atmosphere
4.1: triethylamine / dichloromethane / 2 h / 20 °C / Inert atmosphere
4.2: Inert atmosphere
5.1: 1,2-dichloro-ethane / acetonitrile / 5 h / 0 °C / Inert atmosphere
6.1: toluene-4-sulfonic acid / methanol / 2 h / 20 °C / Inert atmosphere
With
chloro-trimethyl-silane; toluene-4-sulfonic acid; 1,2-dichloro-ethane; triethylamine; sodium iodide; N,N,N',N'-tetramethylguanidine;
In
methanol; dichloromethane; N,N-dimethyl-formamide; acetonitrile;
DOI:10.1021/jm1014023