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| CAS No.: | 504-75-6 |
|---|---|
| Name: | 4,5-dihydro-1H-imidazole |
| Molecular Structure: | |
|
|
|
| Formula: | C3H6 N2 |
| Molecular Weight: | 70.094 |
| Synonyms: | 2-Imidazoline(6CI,7CI,8CI); 4,5-Dihydroimidazole; Corban 210WS; Imidazoline; D2-Imidazoline |
| Density: | 1.15g/cm3 |
| Melting Point: | 55°C |
| Boiling Point: | 219.1°Cat760mmHg |
| Flash Point: | 86.3°C |
| Safety: | Poison by intraperitoneal route. When heated to decomposition it emits toxic fumes of NOx. |
| PSA: | 24.39000 |
| LogP: | -0.61770 |

| Conditions | Yield |
|---|---|
| With 3,3-dimethyldioxirane In methanol; acetone at 25℃; | A 53% B 15% |

carbon monoxide


ethylenediamine

A

2-imidazoline

B

imidazolidone

C

N-β-aminoethylcarbamic acid

| Conditions | Yield |
|---|---|
| With tetracarbonyl nickel In ethanol at 160℃; for 18h; | A 28% B 10.6% C 31.7% |
| With tetracarbonyl nickel In ethanol at 160℃; for 18h; | A 28% B 10.6% C 31.7% |


N,N'-ethylenethiourea

A

2-imidazoline

B

imidazolidone

C

4,5-dihydro-1H-imidazole-2-sulfonic acid

| Conditions | Yield |
|---|---|
| With dihydrogen peroxide; trifluoroacetic acid at 25℃; |


| Conditions | Yield |
|---|---|
| Stage #1: 2-imidazoline; N-butyl-2-iodobenzamide With caesium carbonate; L-proline In dimethyl sulfoxide for 0.333333h; Ullmann reaction; Inert atmosphere; Stage #2: With copper(l) iodide In dimethyl sulfoxide at 120℃; for 12h; Ullmann reaction; Inert atmosphere; | A 88% B n/a |


2-imidazoline


molybdenum hexacarbonyl


cis-tetracarbonylbis(2-imidazoline-N)molybdenum(0)


fac-tricarbonyltris(2-imidazoline-N)molybdenum(0)

| Conditions | Yield |
|---|---|
| In toluene byproducts: CO; N2-atmosphere; 3 equiv. of imidazoline, 100°C, 10 min (pptn.); filtration, washing (Et2O), drying (vac.); elem. anal.; bis(imidazoline)-complex from filtrate; | A 20% B 75% |


2-imidazoline


2-methyl-5-[4-hydroxy-1-[4-(methylsulfonyl)phenyl]-4-(trifluoromethyl)-4,5-dihydro-1H-imidazol-2-yl]pyridine


2-methyl-5-[1-[4-(methylsulfonyl)phenyl]-4-trifluoromethyl-1H-imidazol-2-yl]pyridine

| Conditions | Yield |
|---|---|
| With p-toluenesulfonic acid monohydrate In ethyl acetate; acetone; toluene | 66% |

| Conditions | Yield |
|---|---|
| In toluene for 48h; Heating; | 62% |

2-imidazoline


di-μ-chloro-bis(1,5-cyclooctadiene)dirhodium


chloro(cyclo-octa-1,5-diene)(2-imidazoline-N)rhodium(I)

| Conditions | Yield |
|---|---|
| In toluene N2-atmosphere; stoich. amts., refluxing for 1 h; crystn. (-20°C), addn. of hexane, collection (filtration), washing (Et2O), drying (vac.); elem. anal.; | 55% |

2-imidazoline


4-[4-hydroxy-1-[4-(methylsulfonyl) phenyl]-4-(trifluoromethyl)-4,5-dihydro-1H-imidazol-2-yl]pyridine


4-[1-[4-(methylsulfonyl)phenyl]-4-(trifluoromethyl)-1H-imidazol-2-yl]pyridine

| Conditions | Yield |
|---|---|
| With p-toluenesulfonic acid monohydrate In ethyl acetate; acetone; toluene | 41% |
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IUPAC: 4,5-Dihydro-1H-imidazole
Imidazoline with CAS NO. of 504-75-6 is also called for 2-Imidazoline ; 4,5-Dihydro-1H-imidazole ; 1H-Imidazole, 4,5-dihydro- ; CHEBI:53094 ; CID68156 ; EINECS 207-999-4 ; 504-75-6 and so on.
Molecular Weight: 70.09
Molecular Formula: C3H6N2
ACD/LogP: -1.08
ACD/LogD (pH 5.5): -3.08
ACD/LogD (pH 7.4): -3.07
ACD/BCF (pH 5.5): 1
ACD/BCF (pH 7.4): 1
ACD/KOC (pH 5.5): 1
ACD/KOC (pH 7.4): 1
H bond acceptors: 2
H bond donors: 1
Freely Rotating Bonds: 0
Heavy Atom Count: 5
Formal Charge: 0
Complexity: 48.9
Isotope Atom Count: 0
Defined Atom StereoCenter Count: 0
Undefined Atom StereoCenter Count: 0
Defined Bond StereoCenter Count: 0
Undefined Bond StereoCenter Count: 0
Covalently-Bonded Unit Count: 1
Index of Refraction: 1.568
Molar Refractivity: 19.92 cm3
Molar Volume: 60.8 cm3
Surface Tension: 41.8 dyne/cm
Density: 1.15 g/cm3
Flash Point: 86.3°C
Enthalpy of Vaporization: 45.55 kJ/mol
Boiling Point: 219.1°C at 760 mmHg
Vapour Pressure: 0.122 mmHg at 25°C
The molecular structure of Imidazoline with CAS NO. of 504-75-6 :

Imidazoline (CAS NO.504-75-6) is found in the commercially available second generation Grubbs' catalyst.
| 1. | ipr-mus LD50:50 mg/kg | AMRL** Aerospace Medical Research Laboratory Report.(Aerospace Technical Div., Air Force Systems Command, Wright-Patterson Air Force Base, OH 45433) |
Reported in EPA TSCA Inventory.
Poison by intraperitoneal route. When heated to decomposition it emits toxic fumes of NOx.
1.Removal in wastewater treatment of Imidazoline (CAS NO.504-75-6):
Total removal:1.87 percent
Total biodegradation:0.09 percent
Total sludge adsorption:1.76 percent
Total to air:0.03 percent
(using 10000 hr Bio P,A,S)
2. Imidazoline (CAS NO.504-75-6) is a nitrogen-containing heterocycle which is derived from imidazole.The ring contains an imine bond, and the carbons at the 4 and 5 positions are singly bonded, rather than doubly bonded for the case of imidazole.