93972-01-1

Usage

Uses

Intermediates of Liquid Crystals

Upstream product

• 764-85-2 Nonanoyl chloride 
• 693-58-3 1-Bromononane 
• 3315-91-1 4-biphenylylmagnesium bromide 
• 92-52-4 biphenyl 
• 93972-03-3 1-biphenyl-4-yl-nonan-1-one 

Downstream Products

• 52709-85-0 4-nonyl 4'-cyanobiphenyl 

Relevant academic research and scientific papers

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 %.

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.