Multi-step reaction with 14 steps
1.1: LiHMDS / tetrahydrofuran / -78 °C
1.2: 92 percent / tetrahydrofuran / -78 °C
2.1: Dibal-H / toluene / -78 °C
3.1: Et3N; DMAP / CH2Cl2
4.1: 95 percent / BF3*OEt2 / CH2Cl2 / -78 °C
5.1: 99 percent / H2 / 10 percent Pd/C / ethyl acetate / 760 Torr
6.1: LiHMDS / tetrahydrofuran / -78 °C
6.2: 74 percent / tetrahydrofuran / -78 °C
7.1: t-BuLi / tetrahydrofuran / -78 °C
7.2: 72 percent / Trisyl-N3 / tetrahydrofuran / -78 °C
8.1: B-bromocatecholborane / CH2Cl2
9.1: toluene / Heating
10.1: 94 percent / KH / tetrahydrofuran
11.1: 75 percent / HF*pyr / acetonitrile
12.1: Dess-Martin reagent / CH2Cl2
13.1: NaClO2; NaH2PO4 / H2O; 2-methyl-propan-2-ol
14.1: 55 percent / EDC; HOBt; i-Pr2NEt / dimethylformamide
With
dmap; sodium chlorite; sodium dihydrogenphosphate; boron trifluoride diethyl etherate; bromocatecholborane; hydrogen; tert.-butyl lithium; potassium hydride; diisobutylaluminium hydride; benzotriazol-1-ol; Dess-Martin periodane; pyridine hydrogenfluoride; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide; triethylamine; N-ethyl-N,N-diisopropylamine; lithium hexamethyldisilazane;
palladium on activated charcoal;
In
tetrahydrofuran; dichloromethane; water; ethyl acetate; N,N-dimethyl-formamide; toluene; acetonitrile; tert-butyl alcohol;
DOI:10.1016/S0960-894X(02)00612-1