| Identification | More | [Name]
Dibutylurea | [CAS]
1792-17-2 | [Synonyms]
1,3-DIBUTYLUREA
DIBUTYLUREA
N,N'-DIBUTYLUREA
N,N'-DI-N-BUTYLUREA
TIMTEC-BB SBB007953
n,n’-dibutylurea(asimpurity)
Urea, N,N'-dibutyl-
urea,1,3-dibutyl- | [EINECS(EC#)]
217-258-7 | [Molecular Formula]
C9H20N2O | [MDL Number]
MFCD00015229 | [Molecular Weight]
172.27 | [MOL File]
1792-17-2.mol |
| Hazard Information | Back Directory | [Chemical Properties]
white to pink or light beige crystalline powder | [Uses]
N,N''-Dibutylurea is a degradation product of Benomyl, the active ingredient in Benlate fungicides. | [Uses]
N,N'-Dibutylurea is a degradation product of Benomyl, the active ingredient in Benlate fungicides. | [Preparation]
The reactions under CO2 pressured conditions were carried out in a stainless steel reactor (SUS 304, 30 mL, TVS-5 type). Thus, butylamine (2.9 g, 40 mmol), Ph3SbO (370 mg, 1.0 mmol), P4S10 (890 mg, 2.0 mmol), and benzene (20 mL) were charged into the reactor, and then CO2 was introduced at a pressure of 4.9 MPa (50 kg cm-2, ca. 65 mmol) at room temperature. The reactor was heated at 80 ℃ in a temperature-regulated incubator for 12 h. When a reaction temperature higher than 100 ℃ was necessary, an oil bath was used. After the heating, the reactor was cooled and carefully decompressed. The contents were treated with hot benzene (3×20 mL) and filtered to remove an insoluble residue containing the catalyst and phosphoric acid derivatives. The collected benzene solution was then concentrated to dryness in vacuo with cooling. Pure 1,3-dibutylurea was isolated by recrystallization from ligroin (yield 2.99 g, 88%). | [Synthesis Reference(s)]
Synthetic Communications, 21, p. 1923, 1991 DOI: 10.1080/00397919108021783 |
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