Multi-step reaction with 8 steps
1: 35 percent / K2CO3 / dimethylformamide / Ambient temperature
2: imidazole / dimethylformamide
3: N,N-diethylaniline / 4 h / 200 °C
4: aq. NaOH / dimethylformamide / 1 h
5: 1.) pyridine, ozonized O2, 2.) Me3S / 1.) CH2Cl2, MeOH, -78 deg C, 2.) CH2Cl2, MeOH, RT, overnight
6: tetrahydrofuran / -78 °C
7: pivalic acid / Heating
8: 1.0 M tetrabutylammonium fluoride / tetrahydrofuran / 0.17 h
With
pyridine; 1H-imidazole; sodium hydroxide; ozone-containing oxygen; trimethylsulfonium; tetrabutyl ammonium fluoride; potassium carbonate; N,N-diethylaniline; Trimethylacetic acid;
In
tetrahydrofuran; N,N-dimethyl-formamide;
DOI:10.1021/jm9603633