Sec Butyl bromide

Phenylacetonitrile Sec-Butyl bromide Thionyl chloride Dimethyl sulfate... 

N-tert-Butyl-2-(5-benzyloxy-6-hydroxy-methyl-2-pyr idyl)-2-hydroxy acetamide Pirbuterol Butyl bromide Bufexamac Bupivacaine Fenipentol sec-Butyl bromide... 

The reaction of bromine with optically active sec-butyltin compounds Bu SnRs, to give sec-butyl bromide, can give retention or inversion in the sec-butyl group, depending on the natime of the group R... 

C4H,jBr 109-65-9) see Bufexamac Bupivacaine Butylscopolammonium bromide Oxybuprocaine Tetracaine sec-butyl bromide... 

Butyl bromide, b274 sec-Butyl bromide, b275 tert-Butyl bromide, b372 iV-Butyl-l -butanamine, dl39 Butyl butenoate, b531... 

The primary advantage in the first step of the method described here (using 1-chlorobutane diluted in MeCN) is that it eliminates long reaction periods and allows the use of secondary alkyl halides without competitive elimination reactions. For example, the reaction of sec-butyl bromide with N-methylimidazole using the classical method (in neat alkyl halide) produces, along with the desired product, 20-30% of butenes and 1-methylimidazole hydrobromide. In the second step, the use of water as solvent allows the anion metathesis reaction to be quantitative in a very short time and allows the easy purification of the ionic liquids. Moreover, employing the potassium salt avoids the use of corrosive and difficult to handle hexafluorophosphoric add and the expensive silver tetrafluoroborate. ... 

However, inversion of configuration has been found in certain cases, demonstrating that the Se2 (back) mechanism can take place. For example, the reaction of optically active sec-butyltrineopentyltin with bromine (2-30) gives inverted sec-butyl bromide.1" A number of... 

The ethyl sec,-butylmalonate was prepared from sec-butyl bromide and malonic ester according to the general method described in Org. Syn. 4, n. The yield of ester boiling at i24-i32°/28 mm. was 80-81 per cent of the theoretical amount. The yields of 3-methyl pentanoic acid given in this procedure were obtained with this grade of ester. 

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