- Iron-catalyzed cross-coupling reaction of alkyl halides with biphenyl grignard reagent
-
In the presence of a catalytic amount of iron salts and N,N,N',N'-tetramethylethylene diamine as additive, alkyl bromide reacted with biphenyl magnesium bromide to obtain the cross-coupling product in good yields. The suitable amount of catalyst and the additive are 5 % mol (based on alkyl bromide), 1.3 equiv(based on alkyl bromide), respectively. Under the optimal conditions, the yields of the crosscoupling could reach up to 92.3 %.
- Dai,Liu,Zhang,Wei,Guan
-
p. 6303 - 6305
(2013/07/26)
-
- SYNTHESIS OF 4-ALKYL-4'-CYANOBIPHENYLS
-
Liquid crystals of the 4-alkyl-4'-cyanobiphenyl group were synthesized without the use of copper cyanide. 4-Alkyl-4'-formylbiphenyls and the 4-formyloximes of 4'-alkylbiphenyl, which possess a liquid-crystalline state, were isolated.Beginning with the pentyl homolog, they form an enantiotropic nematic phase, and beginning with octyl homolog they also form a smectic meso phase.
- Ruolene, Yu. I.,Adomenas, P. V.,Sirutkaitis, R. A.,Denis, G. I.
-
p. 1187 - 1191
(2007/10/02)
-