Multi-step reaction with 9 steps
1.1: 99 percent / NaH / tetrahydrofuran / 2.5 h / 65 °C
2.1: n-BuLi / tetrahydrofuran / 2 h / -40 - 20 °C
2.2: 98 percent / 1 h / -78 °C
3.1: s-BuLi / tetrahydrofuran / 2 h / -78 - 30 °C
3.2: 98 percent / 1 h / -78 °C
4.1: 97 percent / TMSCl; LiBF4 / acetonitrile / 4 h / -10 - 25 °C
5.1: 100 percent / K2CO3 / acetone / 2.5 h / Heating
6.1: SeO2; t-BuO2H / CH2Cl2 / 8 h / 0 °C
6.2: 73 percent / NaBH4 / methanol
7.1: Et3N / CH2Cl2 / 1 h / -40 - -20 °C
8.1: LiBr / tetrahydrofuran / 2 h / -20 - 25 °C
9.1: NaH / tetrahydrofuran / 0.17 h
9.2: N-BuLi / 0.5 h / -10 °C
9.3: 87 percent / tetrahydrofuran / 1.5 h / -10 °C
With
tert.-butylhydroperoxide; lithium tetrafluoroborate; n-butyllithium; chloro-trimethyl-silane; selenium(IV) oxide; sec.-butyllithium; sodium hydride; potassium carbonate; triethylamine; lithium bromide;
In
tetrahydrofuran; dichloromethane; acetone; acetonitrile;
1.1: Alkylation / 2.1: Metallation / 2.2: Methylation / 3.1: Metallation / 3.2: Alkylation / 4.1: Substitution / 5.1: Methylation / 6.1: Oxidation / 6.2: Reduction / 7.1: Substitution / 8.1: Substitution / 9.1: Metallation / 9.2: Metallation / 9.3: Alkylation;
DOI:10.1021/jo9919613