| Identification | More | [Name]
3,4-Dimethoxy-3-cyclobutene-1,2-dione | [CAS]
5222-73-1 | [Synonyms]
3,4-DIMETHOXY-3-CYCLOBUTENE-1,2-DIONE
3,4-DIMETHOXYCYCLOBUT-3-ENE-1,2-DIONE
DIMETHYL SQUARATE
SQUARIC ACID
SQUARIC ACID DIMETHYL ESTER
3-Cyclobutene-1,2-dione,3,4-dimethoxy-
3,4-DIMETHOXY-3-CYCLOBUTENE-1,2-DIONE, 9 9%
Squaric acid dimethyl ester,(Dimethyl squarate, 3,4-Dimethoxy-3-cyclobutene-1,2-dione)
3,4-DIMETHOXYCYCLOBUTANE-1,2-DIONE
Dimethyl squarate, Squaric acid dimethyl ester
1,2-Dimethoxy-1-cyclobutene-3,4-dione
1,2-Dimethoxycyclobutene-3,4-dione | [EINECS(EC#)]
220-761-4 | [Molecular Formula]
C6H6O4 | [MDL Number]
MFCD00101316 | [Molecular Weight]
142.11 | [MOL File]
5222-73-1.mol |
| Safety Data | Back Directory | [Risk Statements ]
R42/43:May cause sensitization by inhalation and skin contact . | [Safety Statements ]
S22:Do not breathe dust .
S24/25:Avoid contact with skin and eyes .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection . | [WGK Germany ]
3
| [HS Code ]
29145090 |
| Hazard Information | Back Directory | [Chemical Properties]
white crystalline powder | [Uses]
3,4-Dimethoxy-3-cyclobutene-1,2-dione (Dimethyl squarate) finds it uses in the synthesis of chiral squaramides, highly enantioselective catalyst for the Friedel-Crafts reactions of indoles, 3-(hydroxyamino)-4-methoxy-3-cyclobutene-1,2-dione, squarate derivatives of the O-SP-core antigens, methyl squarate derivative of the Ogawa O-SP-core antigen, o-quinodimethanes, benzocyclobutenes, quinones. It is employed as a starting material in the preparation of o-quinodimethanes, benzocyclobutenes, and quinones. | [General Description]
3,4-Dimethoxy-3-cyclobutene-1,2-dione (Dimethyl squarate) is a cyclobutene derivative. It reacts with hydroxylamine derivatives to afford 3-hydroxyamino-4-methoxy-3-cyclobutene-1,2-diones. |
| Spectrum Detail | Back Directory | [Spectrum Detail]
3,4-Dimethoxy-3-cyclobutene-1,2-dione(5222-73-1)MS
3,4-Dimethoxy-3-cyclobutene-1,2-dione(5222-73-1)1HNMR
3,4-Dimethoxy-3-cyclobutene-1,2-dione(5222-73-1)13CNMR
3,4-Dimethoxy-3-cyclobutene-1,2-dione(5222-73-1)IR1
3,4-Dimethoxy-3-cyclobutene-1,2-dione(5222-73-1)IR2
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