Multi-step reaction with 7 steps
1: 1.) O3, 2.) dimethylsulfide / 1.) dichloromethane, -78 deg C, 5min
2: acetone / 0.33 h / 0 °C / Jones oxidation
3: 1.) THF, 25 deg C, 6h, 2.) THF, 25 deg C, 16h
4: 1.) O3, dimethylsulfide / 1.) CH2Cl2, -78 deg C, 10 min, 2.) boiling aqueous methanol, 10min
5: p-toluenesulfonyl azide, triethylamine / acetonitrile / 3 h / Ambient temperature
6: rhodium(II) acetate / benzene / 0.33 h / 50 °C
7: 1). diphenyl chlorophosphate, diisopropyl ethylamine, 2.) diisopropyl ethylamine / 1.) acetonitrile, 0 deg C, 30min, 2.) 5 deg C
With
rhodium(II) acetate; 4-toluenesulfonyl azide; dimethylsulfide; ozone; triethylamine; N-ethyl-N,N-diisopropylamine; chlorophosphoric acid diphenyl ester;
In
acetone; acetonitrile; benzene;
DOI:10.1016/S0040-4039(00)85833-5