82102-28-1

Upstream product

• 38633-40-8 (E)-cinnamyltriphenylphosphonium bromide 
• 587-04-2 m-Chlorobenzaldehyde 
• 14371-10-9 (E)-3-phenylpropenal 
• 62673-31-8 benzyl(bromo)zinc 
• 2039-85-2 3-Chlorostyrene 
• 103-64-0 bromostyrene 
• 104-55-2 3-phenyl-propenal 
• 588-72-7 [(E)-2-bromoethenyl]benzene 

Relevant academic research and scientific papers

Palladium-tetraphosphine complex catalysed heck reaction of vinyl bromides with alkenes: A powerful access to conjugated dienes

A wide variety of 1,3-dienes have been prepared by the Heck vinylation of vinyl bromides using [Pd(η3-C3H5)Cl] 2/cis,cis,cis-1,2,3,4-tetrakis[(diphenylphosphino)methyl] cyclopentane (Tedicyp) as the catalyst precursor. Both α- and β-substituted vinyl bromides undergo the Heck reaction with functionalised alkenes such as acrylates, enones, styrenes or a vinyl sulfone, and also with nonfunctionalised alkenes such as dec-1-ene, leading stereoselectively, in most cases, to the corresponding E- or E,E-1,3-dienes in good yields. Furthermore, this catalyst can be used at low loading for several reactions. Georg Thieme Verlag Stuttgart.

Diphenylamine derivative, production method therefor and electrophotographic photoconductor

The present invention provides a diphenyl amine derivative having the excellent solubility to a solvent and compatibility to a binding resin, an efficient production method therefor, and an electrophotographic photoconductor having the excellent sensitivity, capable of effectively preventing generation of the black dots. A diphenyl amine derivative represented by the following general formula (1) is used: (In the general formula (1), R1 to R12 each are a hydrogen atom, an alkyl group which may have a substituent, or the like, Z is a ring structure linked with a benzene ring, which is a 4 to 8-membered ring including a hydrogen atom, a nitrogen atom, an oxygen atom, a carbon atom or a sulfur atom, m1, m2, n1, n2 each are 0 or 1, m1 + n1 is 1 or 2, and m2 + n2 is 1 or 2.)

Palladium-catalyzed stereoselective synthesis of (E)-stilbenes via organozinc reagents and carbonyl compounds

In the presence of a catalytic amount of PdCl2(PPh 3)2 and a silylating agent, organozinc halides reacted with carbonyl compounds to give the corresponding (E)-stilbenes in good to excellent yields under mild conditions. The reaction mechanism is briefly discussed.

Heck reaction of vinyl bromides with alkenes in the presence of a tetraphosphine/palladium catalyst

Through the use of [PdCl(C3H5)]2- cis,cis,cis-1,2,3,4-tetrakis(diphenylphosphinomethyl)cyclopentane as a catalyst, a range of vinyl bromides undergo Heck reaction with a wide variety of alkenes leading selectively to the corresponding 1,3-dienes in good yields. Furthermore, it can be used at low loading even for reactions of sterically hindered vinyl bromides.

Carbon-carbon double-bond formation from the reaction of organozinc reagents with aldehydes catalyzed by a nickel(II) complex

Stereoselective alkenylated compounds are formed from the reaction of organozinc halides and aldehydes (see scheme; FG = functional group). Under mild conditions, and in the presence of a silylating agent, the Ni-catalyzed procedure gives E-alkenes and E-