Multi-step reaction with 11 steps
1.1: t-BuOK / benzene / 3 h / Heating
1.2: 86 percent / benzene; tetrahydrofuran / 1 h / Heating
2.1: 95 percent / oxalyl chloride; DMSO; i-Pr2NEt / CH2Cl2 / 1 h / -78 - 0 °C
3.1: NaClO2; NaH2PO4 / dimethylsulfoxide; H2O / 1 h / 20 °C
4.1: 2.61 g / diethyl ether; methanol / 0.5 h / 20 °C
5.1: NaHMDS / tetrahydrofuran / 0.33 h / 0 °C
5.2: 69 percent / tetrahydrofuran / 4 h / -78 °C
6.1: NaHMDS / tetrahydrofuran / 0.33 h / 0 °C
6.2: tetrahydrofuran / 0.33 h / 0 °C
6.3: tetrahydrofuran / 0.5 h / 0 - 20 °C
7.1: 475 mg / n-Bu3SnH; AIBN / toluene / 1 h / Heating
8.1: 88 percent / DIBAL-H / toluene; CH2Cl2 / 1 h / -100 °C
9.1: 93 percent / tetrahydrofuran / 1 h / 0 °C
10.1: 96 percent / [RuCl2(=CHPh)(PCy3)2] / CH2Cl2 / 12 h / Heating
11.1: 93 percent / 2,6-lutidine / CH2Cl2 / 0.5 h / 20 °C
With
2,6-dimethylpyridine; sodium chlorite; sodium dihydrogenphosphate; oxalyl dichloride; 2,2'-azobis(isobutyronitrile); potassium tert-butylate; tri-n-butyl-tin hydride; sodium hexamethyldisilazane; diisobutylaluminium hydride; dimethyl sulfoxide; N-ethyl-N,N-diisopropylamine;
Grubbs catalyst first generation;
In
tetrahydrofuran; methanol; diethyl ether; dichloromethane; water; dimethyl sulfoxide; toluene; benzene;
1.1: Wittig olefination / 1.2: Wittig olefination / 2.1: Swern oxidation / 9.1: Grignard reaction;
DOI:10.1055/s-2007-965893