Multi-step reaction with 11 steps
1.1: 88 percent / (+/-)-camphor-10-sulfonic acid / benzene / 0.5 h / Heating
2.1: LiHMDS / hexane; tetrahydrofuran / 1 h / -78 °C
2.2: 89 percent / hexane; tetrahydrofuran / 3.5 h / -78 - 20 °C
3.1: hydrazine hydrate; triethylamine / ethanol / 312 h / Heating
4.1: 9.2 g / DBN; I2 / diethyl ether / 0.5 h / 20 °C
5.1: t-BuLi / pentane; tetrahydrofuran / 0.5 h / -78 °C
5.2: pentane; tetrahydrofuran / 1.67 h / -78 - 20 °C
6.1: CeCl3*7H2O; NaBH4 / methanol / 0.5 h / 0 °C
7.1: 2.75 g / HCl / H2O / 0.5 h / 20 °C
8.1: 92 percent / imidazole / CH2Cl2 / 14 h / 20 °C
9.1: 87 percent / CH2Cl2 / 16 h / 26 °C
10.1: n-BuLi / hexane; tetrahydrofuran / 1 h / -78 °C
10.2: hexane; tetrahydrofuran / 1.67 h / -78 - 20 °C
11.1: 718 mg / CeCl3*7H2O; NaBH4 / methanol / 0.5 h / 0 °C
With
1H-imidazole; hydrogenchloride; sodium tetrahydroborate; n-butyllithium; cerium(III) chloride; 2,6-dichloro-benzonitrile; camphor-10-sulfonic acid; iodine; tert.-butyl lithium; hydrazine hydrate; triethylamine; lithium hexamethyldisilazane;
In
tetrahydrofuran; methanol; diethyl ether; ethanol; hexane; dichloromethane; water; pentane; benzene;
6.1: Luche reduction / 11.1: Luche reduction;
DOI:10.1016/S0040-4020(03)00699-9