pyridine hydrogenfluoride T=20°C; 20 h;

1: methanol; 2-deoxy-D-arabinopyranose With hydrogenchloride in diethyl ether T=20°C; 0.5 h; 2: tert-butylchlorodiphenylsilane With pyridine T=20°C; 18 h;

Multistep reaction;