41231-86-1

Basic information

• Product Name: (Z)-penta-1,3-diene-2,4-diyldibenzene
• Synonyms: (Z)-penta-1,3-diene-2,4-diyldibenzene
• CAS NO: 41231-86-1
• Molecular Weight: 220.314
• Mol File: 41231-86-1.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: (Z)-penta-1,3-diene-2,4-diyldibenzene(CAS DataBase Reference)
• NIST Chemistry Reference: (Z)-penta-1,3-diene-2,4-diyldibenzene(41231-86-1)
• EPA Substance Registry System: (Z)-penta-1,3-diene-2,4-diyldibenzene(41231-86-1)

Safety Data

• Hazardous Substances Data: 41231-86-1(Hazardous Substances Data)

Upstream product

• 151990-53-3 3-methyl-3-phenylcyclobutan-1-one 
• 136527-27-0 2,2-dichloro-3-methyl-3-phenylcyclobutan-1-one 
• 98-83-9 isopropenylbenzene 
• 108-86-1 bromobenzene 
• 56516-64-4 penta-2,3-diene-2,4-diyldibenzene 
• 75-16-1 methylmagnesium bromide 
• 536-74-3 phenylacetylene 
• 676-58-4 methylmagnesium chloride 
• 629-05-0 n-octyne 
• 1907-69-3 3-ethoxy-1,3-diphenylprop-2-en-1-one 
• 495-45-4 dypnone 
• 917-64-6 methyl magnesium iodide 
• 54435-79-9 (E)-1,3-diphenyl-3-methyl-2-propen-1-one 

Downstream Products

• 312322-30-8 (pentamethylcyclopentadienyl)(2,4-diphenylpentadienyl)ruthenium(II) 

Relevant articles and documents

Method for synthesizing (E)-2,4,4-trisubstituted conjugated diene in regioselectivity and stereoselectivity mode

The invention discloses a method for synthesizing (E)-2,4,4-trisubstituted conjugated diene in a regioselectivity and stereoselectivity mode. The method comprises the following step: reacting a vinyl cyclopropane compound in an organic solvent at room temperature to 100 DEG C in the presence of an activating reagent by taking a combination of CoCl2 and PNP ligand as a catalyst to stereoselectively obtain the (E)-2,4,4-trisubstituted conjugated diene. The method provided by the invention can be used for stereoselectively synthesizing the (E)-2,4,4-trisubstituted conjugated diene, the used catalyst and raw materials are cheap and easy to obtain, the operation is simple and convenient, the reaction process does not need the participation of other additional reagents, the atom economy is good, and the product has a very high industrial application prospect.

Gold-catalyzed isomerization of unactivated allenes into 1,3-dienes under ambient conditions

We have developed a gold-catalyzed isomerization of unactivated allenes into 1,3-dienes with nitrosobenzene as an additive. This reaction proceeded almost exclusively at room temperature for highly substituted allenes. The utility of this reaction is manifested by the development of one-pot [4+2]-cycloaddition of allenes and reactive alkenes.

R3Cu2M Species: Convenient cuprates for the conversion of 1-alkynes into 1-alkenes

The paper describes reactions of 1-alkynes, R1-CC-H, with new cuprate species of the type R3Cu2M .Under suitably chosen conditions a smooth transfer of R (Me or Et) from the cuprates to the 1-alkynes (R1 = Ph or n-C6H13) could be realized.The resulting stereospecifically generated adducts 1C=CH)xCu2R3-x>Mg (Cl or Br) were stable under the conditions of the reactions, provided that a sufficient amount of lithium bromide was present.In the absence of lithium bromide substantial decomposition of the adducts into RR1C=CH-CH=CRR1 took place.During the reaction of PhCCH with Me3Cu2Li the addition reaction was accompanied by deprotonation, which could be proved by using PhCCD as starting alkyne.Deprotonation in PhC-CH as side-reaction also occured with Me3Cu2MgBr.The latter complex was prepared from MeMgBr and CuBr.The number of R groups which are transferrable from R3Cu2M to R1-CCH with an acceptable rate appeared to depend on the nature of R, viz. one R group in the case of Me3Cu2M and all three R groups in the case of Et3Cu2M.