Multi-step reaction with 2 steps
1.1: n-butyllithium / tetrahydrofuran; hexane / 0.58 h / -78 °C / Inert atmosphere
1.2: -78 - 0 °C / Inert atmosphere
1.3: 0 °C / Inert atmosphere
2.1: sodium acetate; (5aR,10bS)-5a,10b-dihydro-2-(2,4,6-trimethylphenyl)-4H,6H-indeno[2,1-b]-1,2,4-triazolo[4,3-d]-1,4-oxazinium chloride; N-fluorobis(benzenesulfon)imide / chloroform / 48 h / 20 °C / Inert atmosphere
With
(5aR,10bS)-5a,10b-dihydro-2-(2,4,6-trimethylphenyl)-4H,6H-indeno[2,1-b]-1,2,4-triazolo[4,3-d]-1,4-oxazinium chloride; n-butyllithium; sodium acetate; N-fluorobis(benzenesulfon)imide;
In
tetrahydrofuran; hexane; chloroform;
DOI:10.1002/anie.201204521