Envirocat EPZG in water; acetone T=80°C; 4 h;

1: 4-methyl-N'-(4-phenylcyclohexylidene)benzene-1-sulfonohydrazide With n-butyllithium; N,N,N',N,-tetramethylethylenediamine in hexane T=-78 - 20°C; Shapiro reaction; 2: 2-isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane in hexane T=-78 - 20°C;