| Identification | More | [Name]
1,4-Dibromopentane | [CAS]
626-87-9 | [Synonyms]
1,4-DIBROMOPENTANE
(RS)-1,4-Dibromopentane
1,4-dibromo-pentan
pentane,1,4-dibromo-
1,4-Dibromopentane,97%
1,4-Dibrompentan | [EINECS(EC#)]
210-967-2 | [Molecular Formula]
C5H10Br2 | [MDL Number]
MFCD00000153 | [Molecular Weight]
229.94 | [MOL File]
626-87-9.mol |
| Safety Data | Back Directory | [Hazard Codes ]
Xi,Xn | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin .
R36/38:Irritating to eyes and skin .
R22:Harmful if swallowed. | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S37/39:Wear suitable gloves and eye/face protection . | [WGK Germany ]
3
| [TSCA ]
Yes | [HS Code ]
29033919 |
| Hazard Information | Back Directory | [Chemical Properties]
clear colorless to light yellow-brown liquid | [Uses]
1,4-Dibromopentane is used in the preparation of pharaoh ant trail pheromone stereoisomer, indolizidine alkaloid. It is also involved in the preparation 1,2-dimethyl-1-phenylcyclopentane and boc-L-2-amino-6-bromoheptanoic acid. | [Preparation]
1,4-Dibromopentane is synthesized by ring-opening bromination of 2-methyltetrahydrofuran with hydrobromic acid and sulfuric acid. First, add hydrobromic acid into the reaction pot for cooling, slowly add 2-methyltetrahydrofuran and sulfuric acid in turn under stirring, and finish the addition when the temperature does not exceed 40°C. The temperature was raised to 60°C, reacted for 2h, and then reacted at 80-85°C for 4h. After cooling, the bromide was separated and washed with water until neutral to obtain 1,4-dibromopentane as an oily substance. Yield 92.5%. | [Synthesis Reference(s)]
Journal of the American Chemical Society, 74, p. 917, 1952 DOI: 10.1021/ja01124a016 |
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