Trimethylene bromide glycol

Sodium Bromide Method. The yields of trimethylene bromide by the sodium bromide method as described under w-Butyl Bromide are slightly lower than those given above. Thus, from I3S° S- °f water, 1545 g. of sodium bromide, 456 g. of trimethylene glycol, and 2500 g. of sulfuric acid, a yield of mo g. of crude product is obtained, from which, after purification and distillation, a yield of 1030 g. of bromide (85 per cent theory) is obtained. 

Trimethylene bromide, 2,8,10,11 Trimethylene bromohydrin, 11 Trimethylene glycol, 8... 

Other glycols may be obtained in a similar manner, eg, if allyl bromide be treated with hydrobromic add, trimethylene bromide Is formed, from which a /3-glycol — trimethylene glycol—may be obtained by the above reaction. 

Ally bromide Trimethylene bromide Trimetliylene glycol... 

Colorless liquid d 5 1.9712 bp 60 167° (mp —36°) 1.5249, Slightly sol in water (1.68 g/t at 30 ) sol in ale, ether. Upon prolonged heating trimethylene bromide dec and part of it is converted to propylene bromide (1,2-dibro-mopropane). Boiling with water yields trimetbylene glycol. 

The relation between the quantities of trimethylene bromide and propylene bromide obtained is determined by the concentration of the acid and the temperature at which the reaction is carried out. With a saturated aqueous solution of hydrobromic acid, and at a temperature below 30°, the product formed consists largely of 1,3-dibromopropane. Trimethylene bromide enters into reactions of double decomposition for example, with water it yields trimethylene glycol, CH2OH.CH2.CH2OH. 

From trimethylene glycol and hydrogen bromide. Kamm and Newcomb, J. Am. Chem. Soc. 43, 2228 (1922). 

Trimethylene dibromide, dl21 Trimethylene dimercaptan, pi95 Trimethylene glycol, pi92 Trimethylethylene, ml66 Trimethylgermanium bromide, b437... 

The oxidation of trimethylene glycol and dimethyldiethylene glycol by NBS is catalysed by iridium(III) in acidic media.80 The kinetics have been investigated in the presence of mercury(II) acetate as a bromide ion scavenger, and [IrCIri H20)]2 is thought to be the reactive iridium species under the conditions employed. 

Trimethylene glycol, pi95 Trimethylethylene, ml 59 Trimethylgermanium bromide, b363 3,3,5-Trimethylhexahydroazepine, t332... 

In 1882 Freund reported that treating trimethylene glycol with hydrobromic acid gave trimethylene dibromide, which was further treated with sodium in reflux temperature. As a result the sodium dissolved, the sodium bromide was precipited, and a gas from the reaction was collected. What is the gas By treacting with bromine it went back to trimethylene dibromide. By treacting with hydriodic acid it gave iodopropane. Therefore, the gas was concluded to be cyclopropane for the first time. ... 

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