tellurium; n-butyllithium 1) in THF, 0 deg C, 2) RT, 10d; Yield given. Multistep reaction;

tellurium; n-butyllithium 1) in THF, 0 deg C, 2) RT, 3h; Yield given. Multistep reaction. Yields of byproduct given;

1: 1.) sodium hydride / 1.) DMSO, r.t., 20 min, 2.) 40 min 2: 92 percent Spectr. / conc. aq. HCl / methanol / 0.03 h View Scheme

1: 4-methylphenylmethyl phenyl sulfone With polymer bound α-sulfonyl monocarbanions in tetrahydrofuran; N,N-dimethyl-formamide T=80°C; solid-phase synthesis; 2: (R)-phenylethylene oxide With Lithium dimsyl in tetrahydrofuran 3: With phosgene; dimethyl sulfoxide; triethylamine T=-78 - 20°C; Swern oxidation;