| Identification | Back Directory | [Name]
CIS-3,4-DICHLOROCYCLOBUTENE | [CAS]
2957-95-1 | [Synonyms]
CIS-3,4-DICHLOROCYCLOBUTENE
(3R,4S)-3,4-Dichlorocyclobutene
(3R)-3β,4β-Dichloro-1-cyclobutene
(3S,4R)-3,4-Dichloro-1-cyclobutene
Cyclobutene, 3,4-dichloro-, (3R,4S)-rel- | [EINECS(EC#)]
220-981-0 | [Molecular Formula]
C4H4Cl2 | [MDL Number]
MFCD00143990 | [MOL File]
2957-95-1.mol | [Molecular Weight]
122.98 |
| Chemical Properties | Back Directory | [Boiling point ]
74-76 °C55 mm Hg(lit.) | [density ]
1.302 g/mL at 20 °C(lit.) | [refractive index ]
n20/D 1.503 | [Fp ]
55 °C | [storage temp. ]
2-8°C |
| Hazard Information | Back Directory | [Purification Methods]
Distil the cyclobutene at 55mm through a 36-in platinum spinning band column, a fore-run b 58-62o/55mm is mainly 1,4-dichlorobutadiene. When the temperature reaches 70o the reflux ratio is reduced to 10:1 and the product is collected quickly. It is usually necessary to apply heat frequently with a sun lamp to prevent any dichlorobutadiene from clogging the exit in the early part of the distillation [Pettit & Henery Org Synth 50 36 1970]. |
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