Multi-step reaction with 11 steps
1.1: 80 percent / TiCl4; Et3N / CH2Cl2 / 1.5 h / 0 °C
2.1: 94 percent / LiBH4 / methanol; tetrahydrofuran / 1 h / 23 °C
3.1: (COCl)2; DMSO; Et3N / CH2Cl2 / 0.75 h / -60 °C
4.1: NaH / tetrahydrofuran / 2 h / -78 - -20 °C
5.1: 96 percent / Dibal-H / CH2Cl2 / 1 h / -78 - -40 °C
6.1: Dess-Martin periodinane; NaHCO3 / CH2Cl2 / 1.5 h / 23 °C
7.1: diethyl ether / 3 h / -80 °C
8.1: 77 percent / Et3N / CH2Cl2 / 2 h / 0 °C
9.1: 83 percent / Cl2(Pcy)2Ru=CHPh / CH2Cl2 / 12 h / 40 °C
10.1: H2O2; aq. NaOH / methanol / 1.5 h
10.2: 74 percent / NaBH4; PhSeSePh; AcOH / propan-2-ol / 0.5 h / 0 °C
11.1: 100 percent / imidazole; DMAP / dimethylformamide / 13 h / 23 °C
With
1H-imidazole; dmap; sodium hydroxide; lithium borohydride; oxalyl dichloride; dihydrogen peroxide; titanium tetrachloride; sodium hydride; diisobutylaluminium hydride; sodium hydrogencarbonate; Dess-Martin periodane; dimethyl sulfoxide; triethylamine;
Grubbs catalyst first generation;
In
tetrahydrofuran; methanol; diethyl ether; dichloromethane; N,N-dimethyl-formamide;
3.1: Swern oxidation / 4.1: Horner-Emmons reaction;
DOI:10.1016/j.tetlet.2003.08.023