Multi-step reaction with 24 steps
1: (COCl)2, DMSO / CH2Cl2 / -70 °C
2: 1.) potassium hydride, 18-crown-6 / tetrahydrofuran / 1.) 0 deg C; 2.) -78 deg C
3: 99 percent / DIBAH / toluene / -78 °C
4: 95 percent / MCPBA / CH2Cl2 / 0 °C
5: (COCl)2, DMSO / CH2Cl2 / -70 °C
6: 1.) NaH / tetrahydrofuran / 1.) 0 deg C; 2.) -78 deg C
7: 95 percent / water / 1,2-dichloro-ethane / -30 °C
8: ImH, DMAP / dimethylformamide / 40 °C
9: 99 percent / DIBAH / toluene / -78 °C
10: MCPBA / CH2Cl2 / 0 °C
11: (COCl)2, DMSO / CH2Cl2 / -70 °C
12: 1.) NaH / tetrahydrofuran / 1.) 0 deg C; 2.) -78 deg C
13: 90 percent / Bu4NF / tetrahydrofuran / 0 °C
14: 90 percent / water / 1,2-dichloro-ethane / -30 °C
15: ImH, DMAP / dimethylformamide / 40 °C
16: 99 percent / DIBAH / toluene / -78 °C
17: 79 percent / MCPBA / CH2Cl2 / 0 °C
18: (COCl)2, DMSO / CH2Cl2 / -70 °C
19: 1.) NaH / tetrahydrofuran / 1.) 0 deg C; 2.) -78 deg C
20: 96 percent / Bu4NF / tetrahydrofuran / 0 °C
21: water / 1,2-dichloro-ethane / -30 °C
22: ImH, DMAP / dimethylformamide / 40 °C
23: 99 percent / DIBAH / toluene / -78 °C
24: MCPBA / CH2Cl2 / 0 °C
With
1H-imidazole; dmap; oxalyl dichloride; 18-crown-6 ether; tetrabutyl ammonium fluoride; water; potassium hydride; sodium hydride; diisobutylaluminium hydride; dimethyl sulfoxide; 3-chloro-benzenecarboperoxoic acid;
In
tetrahydrofuran; dichloromethane; 1,2-dichloro-ethane; N,N-dimethyl-formamide; toluene;
DOI:10.1016/S0040-4039(00)73733-6