Multi-step reaction with 20 steps
1.1: 80 percent / tetrahydrofuran / 0 °C
2.1: 85 percent / Jones reagent / 0 °C
3.1: (R)-Alpine borane / tetrahydrofuran / -10 - 20 °C
4.1: 80 percent / imidazole / CH2Cl2 / 20 °C
5.1: 90 percent / n-BuLi / tetrahydrofuran / -78 °C
6.1: 70 percent / CuBr*DMS / tetrahydrofuran / -78 - 20 °C
7.1: 75 percent / tetra-n-butylammonium fluoride / tetrahydrofuran / 3 h / 20 °C
8.1: 76 percent / NaH / dimethylformamide; various solvent(s) / 5 h / 0 - 20 °C
9.1: 91 percent / diisobutylaluminium hydride / CH2Cl2; petroleum ether / 2 h / -78 °C
10.1: t-BuOOH; CaH2; SiO2 / (-)-DIPT; Ti(O-i-Pr)4 / CH2Cl2; toluene / 72 h / -20 °C
11.1: Dess-Martin periodinane; pyridine / CH2Cl2 / 0 - 20 °C
12.1: 339 mg / CH2Cl2 / 1 h / 0 - 20 °C
13.1: 90 percent / H2 / Rh/Al2O3 / tetrahydrofuran / 1 h / 20 °C / 760.05 Torr
14.1: 90 percent / LiBH4 / methanol; diethyl ether / 3 h / 20 °C
15.1: 91 percent / DMAP; pyridine
16.1: 83 percent / LiN3; NH4Cl; DMPU / 16 h / Heating
17.1: 90 percent / lithium hydroxide monohydrate / methanol; tetrahydrofuran; H2O / 24 h / 20 °C
18.1: 97 percent / oxalyl chloride; DMSO; Et3N / CH2Cl2 / -78 - 20 °C
19.1: potassium t-butoxide / tetrahydrofuran / 0.02 h / -10 °C
19.2: 77 percent / tetrahydrofuran / 0.08 h
20.1: 72 percent / aq. HCl / tetrahydrofuran / 3 h / 20 °C
With
pyridine; 1H-imidazole; hydrogenchloride; tert.-butylhydroperoxide; dmap; 1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone; lithium hydroxide; lithium borohydride; n-butyllithium; jones reagent; calcium hydride; lithium azide; oxalyl dichloride; copper(I) bromide dimethylsulfide complex; B-isopinocampheyl-9-borabicyclo[3.3.1]nonane; potassium tert-butylate; tetrabutyl ammonium fluoride; hydrogen; silica gel; sodium hydride; diisobutylaluminium hydride; ammonium chloride; Dess-Martin periodane; dimethyl sulfoxide; triethylamine;
titanium(IV) isopropylate; Rh/Al2O3; D-(-)-diisopropyl tartrate;
In
tetrahydrofuran; methanol; diethyl ether; dichloromethane; water; N,N-dimethyl-formamide; toluene; Petroleum ether;
2.1: Jones oxidation / 10.1: Sharpless asymmetric epoxidation / 11.1: Dess-Martin oxidation / 12.1: Wittig reaction / 18.1: Swern oxidation;
DOI:10.1021/ol016336a