1: 3.3.5.5-Tetramethylcyclohexanon-p-tosylhydrazon With n-butyllithium; N,N,N',N,-tetramethylethylenediamine in hexane T=-78 - 20°C; Shapiro reaction; Inert atmosphere; 2: 2-isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane in hexane T=-78 - 20°C; 4 h; Inert atmosphere;

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