sodium hydroxide in isobutyramide T=20°C; 6 h;

1: 3-hydroxymethyl-1-chlorobenzene With trifluoromethylsulfonic anhydride; bis-(phenyl)-sulfoxide; N,N,N',N'-tetra-methylnaphthalene-1,8-diamine in toluene T=-78°C; 2: sodium salt of dimethylmalonate in tetrahydrofuran; toluene T=-78 - 20°C;