Multi-step reaction with 4 steps
1.1: N-ethyl-N,N-diisopropylamine / dichloromethane / 5 h / 20 °C / Inert atmosphere
2.1: tert.-butyl lithium / tetrahydrofuran; pentane / 0.08 h / -78 °C / Inert atmosphere
2.2: 0.17 h / -78 °C / Inert atmosphere
2.3: -78 °C / Inert atmosphere
3.1: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / dimethyl sulfoxide / 23 h / 20 °C / Inert atmosphere
4.1: n-butyllithium; N,N,N,N,-tetramethylethylenediamine / tetrahydrofuran; hexane / 0.05 h / -98 °C / Inert atmosphere
4.2: 2 h / -98 - -60 °C / Inert atmosphere
4.3: Inert atmosphere
With
n-butyllithium; N,N,N,N,-tetramethylethylenediamine; tert.-butyl lithium; N-ethyl-N,N-diisopropylamine; 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione;
In
tetrahydrofuran; hexane; dichloromethane; dimethyl sulfoxide; pentane;
DOI:10.1021/ol300276p