Multi-step reaction with 13 steps
1.1: s-BuLi / cyclohexane; tetrahydrofuran / 1 h / -78 °C
1.2: 63 percent / cyclohexane; tetrahydrofuran / -78 - 20 °C
2.1: 9-BBN / tetrahydrofuran / 20 h / 20 °C
2.2: 84 percent / NaBO3; H2O / tetrahydrofuran / 3 h / 20 °C
3.1: 98 percent / pyridine; DMAP / CH2Cl2 / 2 h / 20 °C
4.1: TMS2NH; (NH4)2SO4 / Heating
4.2: SnCl4 / acetonitrile / 20 °C
5.1: 98 percent / aq. NaOH / methanol / 1 h / 20 °C
6.1: DMAP; phenyl chlorothionoformate / acetonitrile / 5 h / 20 °C
7.1: 59 mg / n-Bu3SnH; AIBN / toluene / 2 h / Heating
8.1: 147 mg / H2 / Pd(OH)2/C / methanol; ethyl acetate / 24 h / 20 °C
9.1: 80 percent / imidazole / dimethylformamide / 20 - 60 °C
10.1: Et3N; 2,4,6-triisopropylbenzenesulfonyl chloride; DMAP / acetonitrile / 24 h / 20 °C
10.2: 87 percent / NH4OH / acetonitrile / 3 h / 20 °C
11.1: 97 percent / DMAP / CH2Cl2 / 20 °C
12.1: 75 percent / triethylamine trihydrofluoride; Et3N / tetrahydrofuran / 20 - 60 °C
13.1: 80 percent / pyridine; DMAP / 20 °C
With
pyridine; 1H-imidazole; dmap; ammonium sulfate; sodium hydroxide; 9-borabicyclo[3.3.1]nonane dimer; 2,4,6-triisopropylphenylsulfonyl chloride; 2,2'-azobis(isobutyronitrile); triethylamine trihydrofluoride; hydrogen; sec.-butyllithium; tri-n-butyl-tin hydride; triethylamine; 1,1,1,3,3,3-hexamethyl-disilazane; phenylcarbonochloridothioate;
palladium dihydroxide;
In
tetrahydrofuran; methanol; dichloromethane; cyclohexane; ethyl acetate; N,N-dimethyl-formamide; toluene; acetonitrile;
DOI:10.1021/jo0495337