1.4- Dilithiotetraphenyl-l,3-butadiene

TeCl4 reacts with 1,4-dilithiotetraphenyl-l,3-butadiene to give tetraphenyltellurophene. ... 

Tetraphenyltellurophene To a suspension of 1,4-dilithiotetraphenyl-l,3-butadiene in 100 mL of ether, prepared from 10 g (56 mmol) of diphenyl acetylene and excess of lithium, is added over 15 min a solution of TeCl4 (5.3 g, 19.7 mmol). The green mixture is poured into a mixture of CH2CI2 and water, the organic phase is separated, filtered through anhydrous MgS04, filtered and evaporated. The residue is recrystallized from dichloromethane/ethanol, giving tetraphenyltellurophene 5.35 g (56%), m.p. 239°C. 

Tellurium tetrachloride and 1,4-dilithiotetraphenyl-l,3-butadiene combined in diethyl ether at 20° to form tetraphenyltellurophene2. No other tellurophene derivative has yet been prepared by this route. 

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See also in sourсe #XX -- [ ]

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