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| CAS No.: | 3923-79-3 |
|---|---|
| Name: | 4,5-dihydroxy-1,3-dimethylimidazolidin-2-one |
| Molecular Structure: | |
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| Formula: | C5H10N2O3 |
| Molecular Weight: | 146.146 |
| Synonyms: | 1,3-Dimethyl-4,5-dihydroxyethyleneurea;1,3-dimethyl-4,5-dihydroxy-2-imidazolidinone;4,5-Dihydroxy-1,3-dimethyl-2-imidazolidinone;2-Imidazolidinone,4,5-dihydroxy-1,3-dimethyl;4,5-Dihydroxy-1,3-dimethyl-2-imidazalidinone;N,N'-dihydroxy ethylene urea;1,3-dimethyl-4,5-dihydroxyimidazolidin-2-one;2,6-dimethyl-4,5-dihydroxyimidazolidin-2-one;4,5-dihydroxy-1,3-dimethyl-imidazolidin-2-one; |
| Density: | 1.442 |
| Melting Point: | 132-134℃ |
| Boiling Point: | 300.7°C at 760 mmHg |
| Flash Point: | 135.7°C |
| Solubility: | 1000g/L at 20℃ |
| PSA: | 64.01000 |
| LogP: | -1.50380 |

| Conditions | Yield |
|---|---|
| In methanol | 83% |

| Conditions | Yield |
|---|---|
| With hydrogenchloride In water at 60℃; for 4h; pH=3; | |
| With triethylamine In water at 25 - 35℃; pH=9; | |
| In water at 50℃; for 4h; pH=4; | |
| With triethylamine In water at 25 - 35℃; for 16h; |

4,5-dihydroxy-1,3-dimethylimidazolidin-2-one


1,3-dimethylimidazolidine-2,4-dione

| Conditions | Yield |
|---|---|
| sulfuric acid In 1,3-dimethyl-2-imidazolidinone at 150℃; for 2h; Product distribution / selectivity; | 100% |
| In water at 80 - 90℃; pH=1; | |
| With sodium hydrogencarbonate In water at 60℃; for 4h; | 115 mg |
| With sulfuric acid In water at 95 - 100℃; for 6h; | 161 g |

thiosemicarbazide


4,5-dihydroxy-1,3-dimethylimidazolidin-2-one

B

1,3-dimethylimidazolidine-2,4-dione

| Conditions | Yield |
|---|---|
| With hydrogenchloride In methanol at 80℃; for 1h; | A 96% B n/a |


| Conditions | Yield |
|---|---|
| With hydrogenchloride In methanol for 0.5h; Heating; | 94% |

| Conditions | Yield |
|---|---|
| With hydrogenchloride at 80℃; for 1h; pH=1; | 92% |

| Conditions | Yield |
|---|---|
| In water Ambient temperature; | 90.5% |

thiosemicarbazide


4,5-dihydroxy-1,3-dimethylimidazolidin-2-one

B

1,3-dimethylimidazolidine-2,4-dione

| Conditions | Yield |
|---|---|
| With hydrogenchloride In water at 80℃; for 1h; pH=2; | A 90% B n/a |


| Conditions | Yield |
|---|---|
| In water for 0.5h; Heating; | 88.6% |

| Conditions | Yield |
|---|---|
| With hydrogenchloride In methanol at 60 - 70℃; for 0.5h; | 83% |