Multi-step reaction with 8 steps
1.1: 1,8-diazabicyclo[5.4.0]undec-7-ene / dichloromethane / 3 h / 20 °C
2.1: boron trifluoride diethyl etherate / dichloromethane / -78 - 20 °C / Molecular sieve
3.1: sodium methylate / methanol; dichloromethane / 0 - 20 °C
4.1: toluene-4-sulfonic acid / N,N-dimethyl-formamide / 4 h / 40 °C / 30 Torr
5.1: sodium hydride / tetrahydrofuran; N,N-dimethyl-formamide; mineral oil / 0.5 h / 0 °C
5.2: 5 h / 0 °C / Reflux
6.1: sodium cyanoborohydride / N,N-dimethyl-formamide / 0.5 h / 20 °C / Molecular sieve; Inert atmosphere
6.2: 0 °C / Molecular sieve; Inert atmosphere
7.1: sodium hydride / tetrahydrofuran; mineral oil / 0.5 h / 0 °C
7.2: 0 °C
8.1: (1,5-cyclooctadiene)[bis(methyldiphenylphosphine)]iridium(I) hexafluorophosphate / tetrahydrofuran / 0.08 h / 20 °C / Inert atmosphere
8.2: 0.5 h / Inert atmosphere
With
(1,5-cyclooctadiene)[bis(methyldiphenylphosphine)]iridium(I) hexafluorophosphate; boron trifluoride diethyl etherate; sodium methylate; sodium hydride; sodium cyanoborohydride; toluene-4-sulfonic acid; 1,8-diazabicyclo[5.4.0]undec-7-ene;
In
tetrahydrofuran; methanol; dichloromethane; N,N-dimethyl-formamide; mineral oil;
DOI:10.1039/c2cc30805c