2,5-DIMETHYL-3,4-DIPHENYLCYCLOPENTADIENONE DIMER

Base Information

• Chemical Name: 2,5-DIMETHYL-3,4-DIPHENYLCYCLOPENTADIENONE DIMER
• CAS No.: 38883-84-0
• Molecular Formula: C19H16O
• Molecular Weight: 260.33
• Hs Code.: 29143900
• Mol file: 38883-84-0.mol

Synonyms:Hemicyclonedimere;2,5-Dimethyl-3,4-diphenylcyclopentadienonedimere;2,5-DIMETHYL-3,4-DIPHENYLCYCLOPENTADIENONE DIMER;

Chemical Property of 2,5-DIMETHYL-3,4-DIPHENYLCYCLOPENTADIENONE DIMER

Chemical Property:

• Vapor Pressure: 2.17E-07mmHg at 25°C
• Melting Point: 186-188oC(lit.)
• Refractive Index: 1.4875 (estimate)
• Boiling Point: 423.8°C at 760 mmHg
• Flash Point: 186.3°C
• PSA: 17.07000
• Density: 1.121g/cm³
• LogP: 4.51650
• Storage Temp.: 0-6°C

Purity/Quality:

98%,99%, ^*data from raw suppliers

2,5-Dimethyl-3,4-diphenylcyclopentadienone, dimer 97% ^*data from reagent suppliers

Safty Information:

• Statements: 36/37/38
• Safety Statements: 24/25-22

MSDS Files:

SDS file from LookChem

Useful:

• Uses: 2,5-Dimethyl-3,4-diphenylcyclopentadienone, dimer was used as Diels Alder diene and undergoes cycloaddition reaction with fulvenes.

Technology Process of 2,5-DIMETHYL-3,4-DIPHENYLCYCLOPENTADIENONE DIMER

There total 11 articles about 2,5-DIMETHYL-3,4-DIPHENYLCYCLOPENTADIENONE DIMER which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 80.0%

2,5-dimethyl-3,4-diphenylcyclopenta-2,4-dienone (26307-17-5) → (3aR,4S,7R,7aR)-2,4,7,7a-Tetramethyl-3,3a,5,6-tetraphenyl-3a,4,7,7a-tetrahydro-4,7-methano-indene-1,8-dione (35228-93-4,38883-84-0) + C38H32O2 (33422-06-9)

Guidance literature:

In neat (no solvent); Irradiation;

DOI:10.1016/0040-4020(80)80198-0

Reference yield: 49.0%

benzyne (462-80-6,53356-60-8,193469-78-2) + 6b,8-dimethyl-7-oxo-9,9a-diphenyl-7,9a-dihydro-6aH-cyclopenta[3,4]pyrazolo[1,5-a]quinolinylium-10-ide (72453-05-5) → (3aR,4S,7R,7aR)-2,4,7,7a-Tetramethyl-3,3a,5,6-tetraphenyl-3a,4,7,7a-tetrahydro-4,7-methano-indene-1,8-dione (35228-93-4,38883-84-0) + 31,4-dimethyl-2,3-diphenylnaphthalene (76426-81-8) + indazolo[2,3-a]quinoline (239-57-6)

Guidance literature:

In 1,2-dichloro-ethane;

DOI:10.1246/cl.1980.1133

Reference yield: 42.0%

benzyne (462-80-6,53356-60-8,193469-78-2) + C28H22N2O (76426-82-9) → (3aR,4S,7R,7aR)-2,4,7,7a-Tetramethyl-3,3a,5,6-tetraphenyl-3a,4,7,7a-tetrahydro-4,7-methano-indene-1,8-dione (35228-93-4,38883-84-0) + 31,4-dimethyl-2,3-diphenylnaphthalene (76426-81-8) + indazolo[3,2-a]isoquinoline (205-50-5)

Guidance literature:

In 1,2-dichloro-ethane;

DOI:10.1246/cl.1980.1133

upstream raw materials:

sulfuric acid

4-hydroxy-2,5-dimethyl-3,4-diphenylcyclopent-2-enone

acetic anhydride

benzyne

Downstream raw materials:

2,5-dimethyl-3,4-diphenyl-2-cyclopentene-1-one

(+/-)-1,4-dimethyl-2,3-diphenyl-(4ac,9ac)-4,4a,9,9a-tetrahydro-1H-1r,4c-methano-fluoren-10-one

C₃₅H₂₀F₁₈O

C₃₈H₃₂O₂

Refernces

• 1、 Weiss, Hilton M.. "Steric Effects in the Dimerization of 2,5-Dialkyl-3,4-Diphenylcyclopentadienones". . p. 439 - 443. Retrieved 2007/10/02.
• 2、 Fuchs, Benzion,Pasternak, Mordechai,Pazhenchevsky, Barak. "PHOTOCHEMICAL STUDIES. IRRADIATION INDUCED TRANSFORMATIONS OF REVERSIBLY DISSOCIATING CYCLOPENTADIENONE-DIMERS AND THEIR MONOMERS". . p. 3443 - 3452. Retrieved 2007/10/02.