in tetrahydrofuran N2 atm.; room temp.;

methanol in ethylene glycol dimethyl ether Ge-compd. was added to a suspn. of Li-compd in DME at -78°C, 1 h at 20°C, MeOH was added by vac.-transfer at -78°C, warming up to 20°C; concentrated on a rotary evaporator, flash chromy. ( hexane/ether), 40percent polymers are afforded;