in benzene reflux for 5 h;

in toluene 25 mmol SnCl4 (25 mmol) in toluene were added dropwise to a suspension of 100 mmol LiCCC6H5 in toluene within a period of 30 min at -78°C; after warming to room temp., the mixt. was refluxed for 3 h;; the mixt. was extracted with hexane/toluene 1:2 in a Soxhlet apparatus, and concd. in vac.;;

in tetrahydrofuran; benzene

in tetrahydrofuran; benzene

in not given

heating;

in diethyl ether reflux for 7 h;

in diethyl ether 100percent purity of (C6H5C2)3Sn(CH3);