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Pseudo protopine synthesis

9synthesis methods
-

Yield:-

Steps:

Multi-step reaction with 5 steps
1: 83 percent / NaH / tetrahydrofuran; dimethylformamide / Heating
2: 70 percent / phosphoryl chloride / toluene / 5 h / Heating
3: O2 / 0.17 h / 18 - 20 °C / Irradiation
4: lithium aluminum hydride / tetrahydrofuran / 3 h / Heating
5: 85 percent / MnO2 / CHCl3 / 1 h / Ambient temperature

References:

Orito, Kazuhiko;Kudoh, Shigekazu;Yamada, Kinji;Itoh, Mitsuomi [Heterocycles,1980,vol. 14,# 1,p. 11 - 14]