Multi-step reaction with 9 steps
1.1: N-Bromosuccinimide / tetrahydrofuran / 3 h / 0 - 25 °C
2.1: trifluoroacetic acid; dihydrogen peroxide / dichloromethane / 1.67 h / 20 °C
3.1: sodium hydride / N,N-dimethyl-formamide; mineral oil / 0.17 h / 20 °C
3.2: 18 h / 80 °C
4.1: triphenylphosphine; chloro-trimethyl-silane / tetrahydrofuran / 18 h / 75 °C
5.1: lithium hydroxide / tetrahydrofuran; methanol; water / 1 h / 20 °C
6.1: N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate; N-ethyl-N,N-diisopropylamine / N,N-dimethyl-formamide / 0.17 h
6.2: 0.5 h / 20 °C
7.1: di(n-butyl)tin oxide; trimethylsilylazide / 1,2-dimethoxyethane / 1 h / 180 °C / Microwave irradiation
8.1: potassium carbonate / N,N-dimethyl-formamide / 18 h / 20 °C
9.1: boron tribromide / dichloromethane; hexane / 1 h / 20 °C
With
N-Bromosuccinimide; chloro-trimethyl-silane; trimethylsilylazide; dihydrogen peroxide; boron tribromide; sodium hydride; di(n-butyl)tin oxide; potassium carbonate; N-ethyl-N,N-diisopropylamine; triphenylphosphine; trifluoroacetic acid; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate; lithium hydroxide;
In
tetrahydrofuran; methanol; 1,2-dimethoxyethane; hexane; dichloromethane; water; N,N-dimethyl-formamide; mineral oil;
DOI:10.1021/acs.jmedchem.7b01682