Multi-step reaction with 9 steps
1.1: bromine / dichloromethane / 36 h / 0 - 20 °C / Inert atmosphere
2.1: triethylamine / palladium diacetate; (diphenylphosphin)ferrocene / diethyl ether; ethanol / 70 °C / Inert atmosphere
2.2: 2 h
3.1: bromine; pyridine / dichloromethane / 2 h / 0 - 20 °C
3.2: 5 °C
4.1: boron trifluoride diethyl etherate / toluene; 4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran; methanol / 20 °C / Inert atmosphere
4.2: 12 h / 90 °C
5.1: bis-triphenylphosphine-palladium(II) chloride / 1,4-dioxane / 90 °C / Inert atmosphere
5.2: 0.5 h / 45 °C
6.1: sodium tetrahydroborate / methanol / 0.33 h / -15 °C
6.2: -15 - 20 °C
6.3: pH 2 - 3
7.1: O-(N-succinimidyl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine / dichloromethane / 1.5 h / 25 °C / Inert atmosphere
7.2: 0.5 h / 25 °C
8.1: phosphorus tribromide / dichloromethane / 96 h / 25 °C
9.1: 1-methyl-pyrrolidin-2-one / 5 h / 20 - 45 °C
With
pyridine; sodium tetrahydroborate; boron trifluoride diethyl etherate; bromine; phosphorus tribromide; O-(N-succinimidyl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; triethylamine; N-ethyl-N,N-diisopropylamine;
bis-triphenylphosphine-palladium(II) chloride; (diphenylphosphin)ferrocene; palladium diacetate;
In
1,4-dioxane; 1-methyl-pyrrolidin-2-one; methanol; diethyl ether; ethanol; dichloromethane; 4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran; toluene;