1.1: 90 percent / 3 h 2.1: 65 percent / Ph3As; Cs2CO3; 9-borabicyclo[3.3.1]nonane / PdCl2[(diphenylphosphanyl)ferrocene]2 3.1: 85 percent / MeONa / methanol 4.1: TMSOTf; 2,6-lutidine 4.2: 78 percent / NaOH / methanol 5.1: 99 percent / 1,3-dichloro-5,6-dicyano-1,4-benzoquinone / CH2Cl2 6.1: 95 percent / HF*pyridine / tetrahydrofuran 7.1: 45 percent / 3,3-dimethyldioxirane View Scheme

1.1: 90 percent / 3 h 2.1: 65 percent / Ph3As; Cs2CO3; 9-borabicyclo[3.3.1]nonane / PdCl2[(diphenylphosphanyl)ferrocene]2 3.1: 85 percent / MeONa / methanol 4.1: TMSOTf; 2,6-lutidine 4.2: 78 percent / NaOH / methanol 5.1: 99 percent / 1,3-dichloro-5,6-dicyano-1,4-benzoquinone / CH2Cl2 6.1: 95 percent / HF*pyridine / tetrahydrofuran View Scheme