Multi-step reaction with 8 steps
1.1: KOH / ethanol; H2O / 2 h / 70 °C
1.2: 94 percent / ethanol; H2O; CH2Cl2 / 2 h / 20 °C / pH 7
2.1: 100 percent / hydrogen / Pd/C / ethyl acetate / 18 h
3.1: 1-bromocarbonyl-1-methylethyl acetate / CHCl3 / 3 h / 20 °C
3.2: 73 percent / NaOMe / tetrahydrofuran / 4 h / 20 °C
4.1: 100 percent / propan-2-ol / 4 h / 86 °C
5.1: K2CO3 / H2O; isopropyl acetate / 0.5 h / 56 °C
6.1: isopropyl acetate / 0.5 h / 85 °C
7.1: 1-hydroxybenzotriazole hydrate; 4-methylmorpholine; 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride / dimethylformamide
7.2: dimethylformamide
7.3: isopropyl acetate / 0.5 h / 85 °C
8.1: 1-hydroxybenzotriazole hydrate; 4-methylmorpholine; 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride / dimethylformamide
8.2: 89 percent / dimethylformamide
With
4-methyl-morpholine; potassium hydroxide; acetoxyisobutyryl bromide; hydrogen; potassium carbonate; 1-hydroxybenzotriazol-hydrate; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride;
palladium on activated charcoal;
In
ethanol; chloroform; Isopropyl acetate; water; ethyl acetate; N,N-dimethyl-formamide; isopropyl alcohol;
DOI:10.1002/jlcr.870