Multi-step reaction with 10 steps
1.1: sodium hydride / N,N-dimethyl-formamide / 1 h / 50 °C
1.2: 27 / 16 h / 20 °C
2.1: periodic acid / ethyl acetate / 1 h / 20 °C
3.1: tetrahydrofuran / 48 h / 20 °C
4.1: tricyclohexylphosphine[1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene](benzylidene)Ru(II) dichloride / dichloromethane / 1 h / 40 °C
5.1: sodium hydride / N,N-dimethyl-formamide / 1 h / 50 °C
5.2: 27 / 16 h / 20 °C
6.1: water; acetic acid / 16 h / 90 °C
7.1: pyridine / 16 h / 20 °C
8.1: N,O-bis-(trimethylsilyl)-acetamide / acetonitrile / 0.25 h / Heating
8.2: TMS triflate / 7 / 16 h / 50 °C
9.1: sodium methylate / methanol / 16 h / 20 °C
10.1: dmap / dichloromethane / 16 h / 20 °C
With
pyridine; dmap; N,O-bis-(trimethylsilyl)-acetamide; sodium methylate; sodium hydride; periodic acid;
tricyclohexylphosphine[1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene](benzylidene)Ru(II) dichloride;
In
tetrahydrofuran; methanol; dichloromethane; water; acetic acid; ethyl acetate; N,N-dimethyl-formamide; acetonitrile;
3.1: Grignard addition;
DOI:10.1039/b101364p