1: methyl-ethyl phosphite With bromine in dichloromethane T=-50°C; Bromination; 0.25 h; 2: ethanol With pyridine in dichloromethane T=20°C; phosphorylation; 2 h; Further stages.;

T=60°C; Rate constant;

N,N,N',N,-tetramethylethylenediamine; sec.-butyllithium in diethyl ether; cyclohexane T=-78°C; Rearrangement; 3 h; Title compound not separated from byproducts.;