3141-04-6

Basic information

• Product Name: 1-(2,4-Cyclopentadiene-1-ylidene)cyclohexane
• Synonyms: (2,4-Cyclopentadiene-1-ylidene)cyclohexane;(2,4-Cyclopentadienylidene)cyclohexane;1-(2,4-Cyclopentadiene-1-ylidene)cyclohexane;5-Cyclohexylidene-1,3-cyclopentadiene;Pentamethylenefulvene
• CAS NO: 3141-04-6
• Molecular Formula: C₁₁H₁₄
• Molecular Weight: 146.23
• Mol File: 3141-04-6.mol
• Article Data: 15

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 1-(2,4-Cyclopentadiene-1-ylidene)cyclohexane(CAS DataBase Reference)
• NIST Chemistry Reference: 1-(2,4-Cyclopentadiene-1-ylidene)cyclohexane(3141-04-6)
• EPA Substance Registry System: 1-(2,4-Cyclopentadiene-1-ylidene)cyclohexane(3141-04-6)

Safety Data

• Hazardous Substances Data: 3141-04-6(Hazardous Substances Data)

Usage

Purification Methods

Purify the fulvene by column chromatography and eluting with n-hexane [Abboud et al. J Am Chem Soc 109 1334 1987]. Cyclohexyl mercaptan (cyclohexane thiol) [1569 -69 -3] M 116.2, b 38-39o/12mm, 5 7o/23mm, 90o/100mm, 157o/763mm, d 4 0.949, n D 1.493, pKEst ~10.8. Possible impurities are the sulfide and the disulfide. Purify the thiol by conversion to the Na salt by dissolving in 10% aqueous NaOH, extract the sulfide and disulfide with Et2O, and then acidify the aqueous solution (with cooling and under N2) with HCl, extract with Et2O, dry over MgSO4, evaporate and distil it in a vacuum (b 41o/12mm). The sulfide has b 7 4o/0.2mm, n D 1.5162 and the disulfide has b 110-112o/0.2mm, n D 1.5557. The Hg-mercaptide has m 77-78o (needles from EtOH). [Naylor J Chem Soc 1532 1947, Beilstein 6 H 8, 6 I 6, 6 II 14, 6 III 46, 6 IV 72.]

Upstream product

• 108-94-1 cyclohexanone 
• 542-92-7 cyclopenta-1,3-diene 
• 132408-81-2 (1-Cyclohexen-1-yl)cyclopentadienyllithium 
• 75-78-5 dimethylsilicon dichloride 
• 67968-60-9 (1S*,2R*,6S*,7R*)-10-cyclohexylidene-4-oxa-tricyclo[5.2.1.02.6]-dec-8-ene-3,5-dione 
• 71-43-2 benzene 
• 141-78-6 ethyl acetate 

Downstream Products

• 67968-60-9 (1S*,2R*,6S*,7R*)-10-cyclohexylidene-4-oxa-tricyclo[5.2.1.02.6]-dec-8-ene-3,5-dione 
• 56942-92-8 (1S*,2S*,6R*,7R*)-10-cyclohexylidene-4-oxa-tricyclo[5.2.1.02.6]-dec-8-ene-3,5-dione 
• 201300-29-0 (C₅H₅)(C₅H₄C(C₅H₁₀)C₆H₄OCH₃)TiCl₂ 
• 140191-83-9 [Cp-C(cyclo-C₅H₁₀)-(2-C₄H₃S)]Li salt 
• 132380-71-3 2-cyclohexyl-6,6-dimethylfulvene 
• 132380-72-4 2-(1-methylcyclohexyl)-6,6-dimethylfulvene 
• 75429-06-0 (1S,4S)-7-Cyclohexylidene-bicyclo[2.2.1]hepta-2,5-diene-2-carboxylic acid methyl ester 
• 126116-89-0 C₁₇H₁₉^(1-)*Li⁽¹⁺⁾ 
• 84257-15-8 4-cyclohexylidene-7,7-dichlorobicyclo<3.2.0>hept-2-en-6-one 
• 126457-98-5 cyclo-C₆H₁₁C₅H₅ 
• 126457-78-1 1-cyclohexylcyclopenta-1,3-diene 
• 10514-81-5 bis-2,4-cyclohexylcyclopenta-1,3-diene 

Relevant articles and documents

Enantioselective 1,3-Dipolar [6+4] Cycloaddition of Pyrylium Ions and Fulvenes towards Cyclooctanoids

Organocatalytic enantioselective 1,3-dipolar [6+4] cycloadditions of pyrylium ion intermediates with fulvenes promoted by a chiral primary amine catalyst have been developed to proceed in moderate to good yields and high enantioselectivities. The resultant chiral bicyclo[6.3.0]undecane scaffold containing a transannular bridging ether is densely functionalised providing a rigid scaffold for further manipulations. Computational studies give important insights into the role of the primary amine catalyst. Analysis of the reaction shows that the catalytic reaction proceeds in a step-wise manner and rationalises the stereochemical outcome of the reaction. Several stereoselective complexity-generating transformations, facilitated by the diverse functional groups and transannular bridge, are presented, highlighting the versatility of the core towards a number of the cyclooctanoid natural products.

METALLOCENE COMPOUNDS, CATALYST COMPOSITIONS COMPRISING THE SAME, AND METHOD FOR PREPARING OLEFIN POLYMERS USING THE SAME

The present invention relates to a transition metal compound which can usefully adjust characteristics of synthesized olefin polymers such as chemical structures, molecular weight distribution, mechanical properties, etc. while exhibiting high activity during olefin polymerization reaction; to a catalyst composition comprising the same; and a preparation method of olefin polymer using the catalyst composition. The novel transition metal compound of the present invention can provide polyolefin with medium-low molecular weight for improving processability and is represented by chemical formula 1.COPYRIGHT KIPO 2016

Olefin high-temperature polymerization metallocene catalyst and preparation method thereof and application of olefin high-temperature polymerization metallocene catalyst in olefin polymerization

The invention discloses an olefin high-temperature polymerization metallocene catalyst and a preparation method thereof and an application of the olefin high-temperature polymerization metallocene catalyst in olefin polymerization. The metallocene catalys