dichloro bis(1,4-diazabicyclo[2.2.2]octane)(BH4)Zr(IV); toluene-4-sulfonic acid in sulfolane; N,N-dimethyl-formamide T=110°C; 9.3 h;

1: N'-(1-(4-phenylphenyl)ethylidene)-4-methylbenzenesulfonohydrazide With Mes2Mg; lithium chloride in tetrahydrofuran T=40°C; Shapiro reaction; 3 h; 2: N-Methoxy-N-methyl-benzamide in tetrahydrofuran T=40°C; 1 h; 3: With water-d2 in tetrahydrofuran

1: sodium methoxide / methanol 2: cyclohexane / 0.08 h / Photolysis View Scheme