Cas no 1087-09-8 (1,4-Diphenyl-2-butyne-1,4-dione)

1,4-Diphenyl-2-butyne-1,4-dione is a conjugated diketone featuring a central butyne backbone flanked by phenyl groups at the 1,4-positions. This compound is notable for its rigid, linear structure and electron-deficient alkynyl-dione moiety, making it a valuable intermediate in organic synthesis. Its extended π-conjugation system enhances reactivity in cycloaddition and cross-coupling reactions, facilitating the construction of complex polycyclic frameworks. The symmetrical phenyl substitution improves stability while retaining solubility in common organic solvents. Applications include use as a precursor for heterocyclic compounds, ligands, and functional materials. Its well-defined structure also makes it suitable for mechanistic studies in photochemistry and catalysis.
1,4-Diphenyl-2-butyne-1,4-dione structure
1087-09-8 structure
Product Name:1,4-Diphenyl-2-butyne-1,4-dione
CAS No:1087-09-8
MF:C16H10O2
MW:234.249404430389
MDL:MFCD00033371
CID:141489
PubChem ID:253662103
Update Time:2025-05-27

1,4-Diphenyl-2-butyne-1,4-dione Chemical and Physical Properties

Names and Identifiers

    • 2-Butyne-1,4-dione,1,4-diphenyl-
    • 1,4-DIPHENYL-2-BUTYNE-1,4-DIONE
    • 1,4-diphenylbut-2-yne-1,4-dione
    • 1,2-Dibenzoylacetylene
    • 1,4-diphenyl-but-2-yne-1,4-dione
    • dibenzoylacetylene
    • Dibenzoylethyne
    • Ethyne,dibenzoyl
    • NSC 20233
    • Ethyne, dibenzoyl-
    • 2-Butyne-1,4-dione, 1,4-diphenyl-
    • BLCJVQFFSUNDMV-UHFFFAOYSA-N
    • NSC20233
    • 1,2-bis(benzoyl)acetylene
    • 2-Butyne-1, 1,4-diphenyl-
    • 1,4-Diphenyl-2-b
    • 1,4-Diphenyl-2-butyne-1,4-dione #
    • ST45025196
    • D4699
    • 1,4-Dipheny
    • MFCD00033371
    • NSC-20233
    • AKOS003245330
    • CS-0321367
    • DTXSID00281135
    • 1,4-Diphenyl-2-butyne-1,4-dione, >=95.0% (HPLC)
    • AS-76441
    • SCHEMBL5143659
    • 1087-09-8
    • InChI=1/C16H10O2/c17-15(13-7-3-1-4-8-13)11-12-16(18)14-9-5-2-6-10-14/h1-10
    • T70069
    • DIPHENYLBUT-2-YNE-1,4-DIONE
    • DS-003978
    • 1,4-Diphenyl-2-butyne-1,4-dione
    • MDL: MFCD00033371
    • Inchi: 1S/C16H10O2/c17-15(13-7-3-1-4-8-13)11-12-16(18)14-9-5-2-6-10-14/h1-10H
    • InChI Key: BLCJVQFFSUNDMV-UHFFFAOYSA-N
    • SMILES: O=C(C#CC(C1C=CC=CC=1)=O)C1C=CC=CC=1

Computed Properties

  • Exact Mass: 234.06800
  • Monoisotopic Mass: 234.068
  • Isotope Atom Count: 0
  • Hydrogen Bond Donor Count: 0
  • Hydrogen Bond Acceptor Count: 2
  • Heavy Atom Count: 18
  • Rotatable Bond Count: 2
  • Complexity: 336
  • Covalently-Bonded Unit Count: 1
  • Defined Atom Stereocenter Count: 0
  • Undefined Atom Stereocenter Count : 0
  • Defined Bond Stereocenter Count: 0
  • Undefined Bond Stereocenter Count: 0
  • Topological Polar Surface Area: 34.1
  • XLogP3: 3.8

Experimental Properties

  • Density: 1.190±0.06 g/cm3 (20 oC 760 Torr),
  • Melting Point: 111.0 to 115.0 deg-C
  • Boiling Point: 384.5±25.0 °C at 760 mmHg
  • Flash Point: 165.6±18.3 °C
  • Refractive Index: 1.613
  • Solubility: Almost insoluble (0.011 g/l) (25 o C),
  • PSA: 34.14000
  • LogP: 2.75560
  • Vapor Pressure: 0.0±0.9 mmHg at 25°C

1,4-Diphenyl-2-butyne-1,4-dione Security Information

  • Symbol: GHS09
  • Signal Word:Warning
  • Hazard Statement: H410
  • Warning Statement: P273-P501
  • Hazardous Material transportation number:UN 3077 9 / PGIII
  • WGK Germany:3
  • Hazard Category Code: 50/53
  • Safety Instruction: 60-61
  • Hazardous Material Identification: N
  • Storage Condition:0-10°C

1,4-Diphenyl-2-butyne-1,4-dione Customs Data

  • HS CODE:2914399090
  • Customs Data:

    China Customs Code:

    2914399090

    Overview:

    2914399090. Other aromatic ketones without other oxygen-containing groups. VAT:17.0%. Tax refund rate:13.0%. Regulatory conditions:nothing. MFN tariff:5.5%. general tariff:30.0%

    Declaration elements:

    Product Name, component content, use to, Acetone declared packaging

    Summary:

    2914399090. other aromatic ketones without other oxygen function. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0%

1,4-Diphenyl-2-butyne-1,4-dione Pricemore >>

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