Multi-step reaction with 4 steps
1: N-ethyl-N,N-diisopropylamine / 1-methyl-pyrrolidin-2-one / 24 h / 120 °C / Sealed tube
2: tris-(dibenzylideneacetone)dipalladium(0); caesium carbonate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene / 1,4-dioxane / 4.5 h / 85 °C / Inert atmosphere
3: 2-di-tertbutylphosphino-3,4,5,6-tetramethyl-2',4',6'-triisopropyl-1,1'-biphenyl; tris-(dibenzylideneacetone)dipalladium(0); sodium hydroxide / 1,4-dioxane; water / 4 h / 80 °C / Inert atmosphere; Sealed tube
4: di-tert-butyl-diazodicarboxylate / tetrahydrofuran / 10 h / 20 °C
With
2-di-tertbutylphosphino-3,4,5,6-tetramethyl-2',4',6'-triisopropyl-1,1'-biphenyl; tris-(dibenzylideneacetone)dipalladium(0); di-tert-butyl-diazodicarboxylate; caesium carbonate; N-ethyl-N,N-diisopropylamine; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; sodium hydroxide;
In
tetrahydrofuran; 1,4-dioxane; 1-methyl-pyrrolidin-2-one; water;