Multi-step reaction with 11 steps
1.1: 53 percent / Br2; AcOH / 20 h / 20 °C
2.1: 84 percent / K2CO3 / acetone / 15 h / Heating
3.1: 91 percent / DIBAL / CH2Cl2; hexane / 2 h / -78 °C
4.1: PCC / CH2Cl2 / 5 h / 20 °C
5.1: KN(SiMe3)2 / diethyl ether; tetrahydrofuran / 0.5 h / -78 °C
5.2: 0.28 g / diethyl ether; tetrahydrofuran / -78 - 20 °C
6.1: 92 percent / BBr3 / CH2Cl2 / 2 h / -78 °C
7.1: 81 percent / K2CO3 / acetone / 20 h / Heating
8.1: 83 percent / Pd(PPh3)4; aq. Na2CO3 / 1,2-dimethoxy-ethane / 20 h / Heating
9.1: aq. HCl / ethanol / 1 h / Heating
10.1: 280 mg / pyridine / CH2Cl2 / 20 °C
11.1: 77 percent / BBr3 / CH2Cl2 / 2 h / -78 °C
With
pyridine; hydrogenchloride; tetrakis(triphenylphosphine) palladium(0); bromine; boron tribromide; potassium hexamethylsilazane; diisobutylaluminium hydride; sodium carbonate; potassium carbonate; acetic acid; pyridinium chlorochromate;
In
tetrahydrofuran; 1,2-dimethoxyethane; diethyl ether; ethanol; hexane; dichloromethane; acetone;
DOI:10.1021/jm030524k