Multi-step reaction with 9 steps
1.1: 92 percent / HClO4; Ac2O
2.1: CH2Cl2; methanol / -5 - 0 °C
3.1: 18 g / sodium bicarbonate / methanol / 1.8 h / 0 °C
4.1: 87 percent / silica gel; pyridinium chlorochromate / CH2Cl2 / 2 h
5.1: 93 percent / SbBu3 / tetrahydrofuran / 60 - 65 °C
6.1: magnesium / tetrahydrofuran / 1 h / sonication
6.2: CuCN / tetrahydrofuran / -10 - 0 °C
6.3: 87 percent / tetrahydrofuran / -60 - 20 °C
7.1: CH2Cl2 / 5 h / 50 °C
8.1: 3.87 g / aq. ammonia / CH2Cl2; diethyl ether / 5 h
9.1: N,N-diisopropylethylamine / CH2Cl2 / 1 h / -14 - 0 °C
9.2: 3.8 g / N,N,N',N'-tetramethylguanidinium azide / CH2Cl2 / 0.5 h / 0 - 30 °C
With
ammonium hydroxide; perchloric acid; acetic anhydride; silica gel; tributylstibine; sodium hydrogencarbonate; magnesium; N-ethyl-N,N-diisopropylamine; pyridinium chlorochromate;
In
tetrahydrofuran; methanol; diethyl ether; dichloromethane;
1.1: Esterification / 2.1: Methylation / 3.1: deformylation / 4.1: Oxidation / 5.1: Condensation / 6.1: Metallation / 6.2: transmetallation / 6.3: Addition / 7.1: Esterification / 8.1: Hydrolysis / 9.1: Chlorination / 9.2: Substitution;
DOI:10.1021/jo971272w