Multi-step reaction with 7 steps
1.1: sodium hydride / tetrahydrofuran; mineral oil / 1 h / 0 °C / Inert atmosphere
1.2: 2 h / 0 - 20 °C / Inert atmosphere
2.1: oxalyl dichloride; dimethyl sulfoxide / dichloromethane / 0.5 h / -78 °C / Inert atmosphere
2.2: 0.5 h / -78 - 20 °C / Inert atmosphere
3.1: n-butyllithium / tetrahydrofuran; hexane / 1 h / -78 °C / Inert atmosphere
3.2: 1 h / -78 °C / Inert atmosphere
4.1: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / dimethyl sulfoxide / 1 h / 20 °C
5.1: (3aR)-1-methyl-3,3-diphenyl-tetrahydro-pyrrolo[1,2-c][1,3,2]oxazaborole; dimethylsulfide borane complex / tetrahydrofuran; toluene / 1 h / 0 - 20 °C / Inert atmosphere
6.1: hydrogen / methanol / 19 h / 20 °C / Inert atmosphere
7.1: sodium hydride / tetrahydrofuran; mineral oil / 1 h / 0 - 20 °C
7.2: 5 h / Reflux
With
n-butyllithium; oxalyl dichloride; dimethylsulfide borane complex; hydrogen; sodium hydride; dimethyl sulfoxide; (3aR)-1-methyl-3,3-diphenyl-tetrahydro-pyrrolo[1,2-c][1,3,2]oxazaborole; 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione;
In
tetrahydrofuran; methanol; hexane; dichloromethane; dimethyl sulfoxide; toluene; mineral oil;
2.1: |Swern Oxidation;
DOI:10.3987/COM-13-12896