94749-73-2Relevant articles and documents
Salmeterol intermediate ionic liquid catalytic bromination technology
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Paragraph 0013; 0023-0044, (2017/05/27)
The invention discloses a salmeterol intermediate ionic liquid catalytic bromination technology. The salmeterol intermediate is (4-(6-bromohexaoxy)butylbenzene and is prepared from 6-(4-phenylbutyl-oxo)hexyl methanesulfonate and potassium bromide as raw materials under the conditions of ionic liquid [bmim]BF4 and acetonitrile. The technology has the advantages of short bromination reaction time, mild conditions and high total yield. The bromination reagent used by the technology is cheap and easily available and has low toxicity. The ionic liquid [bmim]BF4 is a medium having high halogenation activity, can realize strong nucleophilicity of halogen ions and can be widely used in many halogenation reactions.
An efficient and practical synthesis of salmeterol
Lu, Yongping,Xu, Xinliang,Zhang, Xingxian
, p. 168 - 172 (2015/05/20)
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SUBSTITUTED ETHANOLAMINES
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Page/Page column 20, (2010/02/17)
The present invention relates to new substituted ethanolamine adrenergic receptor modulators, pharmaceutical compositions thereof, and methods of use thereof.