p-Benzoquinone

• Catalog No.: A13162
• CAS Number: 106-51-4
• M. F.: C6H4O2
• M. W.: 108.09476
• Purity: 98+%

SYNONYMS

• Title: 对苯醌
• IUPAC name: cyclohexa-2,5-diene-1,4-dione
• IUPAC Traditional name: quinone
• Synonyms: Quinone

DATABASE IDS

• Merck Index: 148074
• MDL Number: MFCD00001591
• CAS Number: 106-51-4
• Beilstein Number: 773967
• EC Number: 203-405-2

PROPERTIES

• Purity: 98+%
• Boiling Point: ca 180°C subl.
• Density: 1.318
• Flash Point: 77°C(171°F)
• Melting Point: 112-115°C
• GHS Hazard statements: H301-H331-H315-H319-H335-H400
• European Hazard Symbols: Toxic (T)
• European Hazard Symbols: Nature polluting (N)
• GHS Precautionary statements: P280H-P273-P305+P351+P338-P302+P352-P309-P310
• Risk Statements: 23/25-36/37/38-50
• RTECS: DK2625000
• Safety Statements: 26-28-45-61
• TSCA Listed: 是
• Hazard Class: 6.1
• UN Number: UN2587
• Packing Group: II

REFERENCES

• Mild reoxidant in palladium-catalyzed reactions, to convert Pd(0) back to Pd(II); see e.g.: Org. Synth. Coll., 8, 137 (1993). For use in the Pd-catalyzed oxidative addition of amines to electron-deficient alkenes, to give enamines, see Palladium(II) chloride, 11034. For the cis-1,4-stereo- and regioselective chloroacetoxylation of 1,3-dienes by Pd(OAc)₂ and LiCl, in the presence of benzoquinone, see Palladium(II) acetate, 10516.
• Reacts with allyl or isoprenyl tin derivatives in the presence of BF₃ etherate to give ortho allyl-substituted quinones: Org. Synth. Coll., 9, 741 (1998). For a reaction scheme, see 2,3-Dimethoxy-5-methyl-1,4-benzoquinone, B24777.