D60400

Sigma-Aldrich

2,3-Dichloro-5,6-dicyano-p-benzoquinone

98%

Synonym(s):
4,5-Dichloro-3,6-dioxo-1,4-cyclohexadiene-1,2-dicarbonitrile, DDQ
Empirical Formula (Hill Notation):
C8Cl2N2O2
CAS Number:
Molecular Weight:
227.00
Beilstein/REAXYS Number:
747939
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

assay

98%

reaction suitability

reagent type: oxidant

mp

210-215 °C (dec.) (lit.)

storage temp.

2-8°C

SMILES string

ClC1=C(Cl)C(=O)C(C#N)=C(C#N)C1=O

InChI

1S/C8Cl2N2O2/c9-5-6(10)8(14)4(2-12)3(1-11)7(5)13

InChI key

HZNVUJQVZSTENZ-UHFFFAOYSA-N

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Application

2,3-Dichloro-5,6-dicyano-p-benzoquinone (DDQ) can be used as:
  • A deprotecting reagent for a variety of compounds, such as thioacetals, acetals, and ketals.
  • An electron-transfer reagent for the synthesis of quinolines from imines and alkynes or alkenes.
  • An effective reagent for the benzylic and allylic C−H functionalization.
  • An oxidizing agent for the synthesis of functionalized furans and benzofurans.
  • A reagent with Ph3P in an efficient synthesis of 1,2-benzisoxazoles.

Packaging

5, 10, 100 g in glass bottle

Pictograms

Skull and crossbones

Signal Word

Danger

Hazard Statements

hazcat

Acute Tox. 3 Oral

Supp Hazards

EUH029

storage_class_code

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK Germany

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

A novel method for the highly efficient synthesis of 1,2-benzisoxazoles under neutral conditions using the Ph3P/DDQ system
Iranpoor N, et al.
Tetrahedron Letters, 47, 8247-8247 (2006)
DDQ-mediated formation of carbon? carbon bonds: Oxidation of imines
Bortolotti B, et al.
Tetrahedron, 49, 10157-10157 (1993)
Mild and efficient photochemical and thermal deprotection of thioacetals and ketals using DDQ
Mathew L and Sankararaman S
The Journal of Organic Chemistry, 58, 7576-7576 (1993)
Predictive model for oxidative C-H bond functionalization reactivity with 2, 3-dichloro-5, 6-dicyano-1, 4-benzoquinone.
Morales-Rivera CA, et al.
Journal of the American Chemical Society, 139(49), 17935-17944 (2017)
Ayse Kocabalkanli et al.
Farmaco (Societa chimica italiana : 1989), 57(12), 993-997 (2003-02-05)
Nucleosides have been of great interest since their strong antiviral activities were discovered. 1,3-Oxathiolane ring system has been known for many years, but it is in recent years that the ring has been used as the sugar ring in nucleoside...

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