Multi-step reaction with 7 steps
1.1: camphor-10-sulfonic acid / acetone / 19 h / 20 °C
2.1: sulfur trioxide pyridine complex; triethylamine / dimethyl sulfoxide / 4.5 h / 0 - 20 °C
3.1: pyridinium p-toluenesulfonate / methanol / 23 h / 4 °C
4.1: pyridine / 21 h / 20 °C
5.1: n-butyllithium / hexane; tetrahydrofuran / 1 h / -78 °C / Inert atmosphere
5.2: 21 h / 4 °C / Inert atmosphere
6.1: sodium hydrogencarbonate; bromine / tetrachloromethane / 0.5 h / 20 °C
7.1: sodium borohydrid / water; N,N,N,N,N,N-hexamethylphosphoric triamide / 3 h / 20 °C
With
pyridine; n-butyllithium; sodium borohydrid; camphor-10-sulfonic acid; bromine; sulfur trioxide pyridine complex; pyridinium p-toluenesulfonate; sodium hydrogencarbonate; triethylamine;
In
tetrahydrofuran; methanol; tetrachloromethane; N,N,N,N,N,N-hexamethylphosphoric triamide; hexane; water; dimethyl sulfoxide; acetone;
5.2: |Wittig-Horner Reaction;
DOI:10.1016/j.carres.2012.12.010