Multi-step reaction with 6 steps
1: triethylamine; 3-ethyl-5-(2-hydroxyethyl)-4-methyl-1,3-thiazolium bromide / 0.25 h / 70 °C / 7757.43 Torr / Microwave irradiation
2: oxone / methanol; water / 2.08 h / 25 °C
3: toluene-4-sulfonic acid / ethanol / 0.75 h / 160 °C / 7757.43 Torr / Microwave irradiation
4: trichlorophosphate / dichloromethane / 1.05 h / 0 °C / Reflux
5: hydroxylamine hydrochloride; sodium acetate / ethanol; water / 1.5 h / Reflux
6: 1,3,5-trichloro-2,4,6-triazine / N,N-dimethyl-formamide / 8 h / 20 °C
With
1,3,5-trichloro-2,4,6-triazine; oxone; hydroxylamine hydrochloride; sodium acetate; 3-ethyl-5-(2-hydroxyethyl)-4-methyl-1,3-thiazolium bromide; toluene-4-sulfonic acid; triethylamine; trichlorophosphate;
In
methanol; ethanol; dichloromethane; water; N,N-dimethyl-formamide;
1: |Stetter 1,4-Dicarbonyl Synthesis / 3: |Paal-Knorr Pyrrole Synthesis;
DOI:10.1016/j.bmc.2013.04.031