Multi-step reaction with 9 steps
1: tetrahydrofuran / 103 h / 0 - 20 °C
2: lithium hydroxide monohydrate / tetrahydrofuran; methanol; water / 3 h / 20 °C
3: dichloromethane / 27 h / 0 - 20 °C
4: lithium hydroxide monohydrate / tetrahydrofuran; methanol; water / 22 h / 20 °C
5: dichloromethane / 96 h / 0 - 20 °C
6: lithium hydroxide monohydrate / tetrahydrofuran; methanol; water / 24 h / 20 °C
7: tetrahydrofuran / 120 h / 0 - 20 °C
8: lithium hydroxide monohydrate / tetrahydrofuran; methanol; water / 20 h / 20 °C
9: benzotriazol-1-ol; O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine / dichloromethane / 19 h / 20 °C
With
lithium hydroxide monohydrate; benzotriazol-1-ol; O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine;
In
tetrahydrofuran; methanol; dichloromethane; water;
DOI:10.1002/hlca.201200136