Multi-step reaction with 10 steps
1.1: (+)-B-methoxy(diisopinocamphenyl)borane / diethyl ether / 2.5 h / 20 °C
1.2: 78 percent / diethyl ether / 2.5 h / -100 °C
2.1: Hunig's base
3.1: 89 percent / second generation Grubbs' catalyst / CH2Cl2 / 5 h / Heating
4.1: 100 percent / hydrogen / Pd/C / methanol / 5 h / 20 °C
5.1: 95 percent / NaOMe / 3 h / Heating
6.1: 86 percent / DMAP; ethyldiisopropylamine / CH2Cl2 / 0 - 20 °C
7.1: LDA / tetrahydrofuran / 0.5 h / -78 °C
7.2: tetrahydrofuran / 2 h / -78 °C
8.1: tetra-n-butylammonium fluoride / tetrahydrofuran / 0 - 20 °C
9.1: Et3N; MsCl / CH2Cl2 / 0 - 20 °C
9.2: 59.4 mg / DBU / CH2Cl2 / 1 h / 20 °C
10.1: 62 percent / TMSBr / CH2Cl2 / -78 - 0 °C
With
dmap; trimethylsilyl bromide; tetrabutyl ammonium fluoride; hydrogen; sodium methylate; methanesulfonyl chloride; triethylamine; N-ethyl-N,N-diisopropylamine; (+)-B-methoxydiisocamphenylborane; lithium diisopropyl amide;
tricyclohexylphosphine[1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidine][benzylidene]ruthenium(II) dichloride; palladium on activated charcoal;
In
tetrahydrofuran; methanol; diethyl ether; dichloromethane;
1.2: Racherla-Brown asymmetric allylation;
DOI:10.1021/ol051483k