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4-溴-N,N-二甲基苯胺的合成 被引量:3

Synthesis of 4-bromo-N,N-dimethylaniline
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摘要 以N,N-二甲基苯胺为原料,采用吡啶为缚酸剂,通过就地生成体积较大的溴化剂——溴化氢吡啶过溴化物,提高了4-位溴代反应的选择性,4-溴-N,N-二甲基苯胺的收率达到了68%.在一些无机碱存在下,本反应也可以得到中等收率的产品.n(N,N-二甲基苯胺):n(溴):n(吡啶)=1:1.1:1.1、反应温度10~15℃、反应时间为6h是最佳工艺条件. In presence of pyridine, 4-bromo-N, N-dimethylaniline was synthesized by substitution reaction starting from N, N-dimethylaniline and bromine. In this reaction, the easy handle together with bigger volume brominating agent pyridinium tribromide was produced and the selectivity of 4-substitution reaction was enhanced. The optimal molar ratio was n (C8 H11 N) : n (Br2) : n (C5 H5 N) = 1 : 1.1 : 1.1, the reaction was at 10 - 15 ℃ for 6 h to give the product in 68 % yield. Moreover the products were also obtained in middle yield in presence of some inorganic base.
出处 《河北师范大学学报(自然科学版)》 CAS 北大核心 2008年第4期503-504,507,共3页 Journal of Hebei Normal University:Natural Science
基金 河北省科技攻关项目(07215603D)
关键词 N N-二甲基苯胺 4-溴-N N-二甲基苯胺 溴化氢吡啶过溴化物 取代反应 N, N-dimethylaniline 4-bromo-N, N-dimethylaniline pyridinium tribromide substitution reaction
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  • 1FOX G J, HALLAS G, HEPWORTH J D. para-bromination of Aromatic Amines: 4-bromo- N, N-dimethyl-3- (trifluoromethyl) Aniline [M]. Organic Syntheses Coll, 1988(6) : 181-186.
  • 2夏鹏,叶海芬.4-溴-N,N-二甲基笨胺的制备[J].中国医药工业杂志,1989,20(9):419-420. 被引量:3
  • 3WILSON C V. 1-methylamino-4-bromoanthraquinone [J]. Organic Syntheses Coll, 1995(3) :575-580.

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  • 1田秀梅,周启星,王林山.氯烃类污染物的生态行为与毒理效应研究进展[J].生态学杂志,2005,24(10):1204-1210. 被引量:25
  • 2M M Heravi, N Abdolhosseini, H A Oskooie. Regioselective and high-yielding bromination of aromatic compounds using hexamethylenetetramine-bromine[J]. Tetrahedron Letters, 2005, 46: 8959-8963.
  • 3W G Wang, X M Shen, F N Ma, et al. Chiral amino alcohols derived from natural amino acids as chiral solvating agents for carboxylic acids[J]. Tetrahedron: Asymmetry, 2008, 19:1193-1199.
  • 4W G Wang, F N Ma, X M Shen. New chiral auxiliaries derived from (S)-a-phenylethylamine as chiral solvating agents for carboxylic acids[J]. Tetrahedron: Asymmetry, 2007, 18: 832-837.
  • 5S Z Kang, H Chen, X Q Li. Preparation of 1-atanine ethyl ester modified multiwalled carbon nanotubes and their chiral discrimination between d-and 1-tryptophan[J]. Diamond & Related Materials, 2010, 19: 1221-1224.
  • 6DA C S, NI M, HAN Z J, et al. Novel non-azacyclo 1,2-aminoalcohols derived from L-Phe and highly enantioselective addition of diethylzinc to aryl aldehydes[J]. Tetrahedron: Asymmetry, 2006, 245(1/2): 1-7.
  • 7WANG W G, SHEN X M, MA F N, et al. Chiral amino alcohols derived from natural amino acids as chiral solvating agents for carboxylic acids[J]. Tetrahedron: Asymmetry, 2008, 19(10): 1193-1199.
  • 8MA X, DA C S, YI L, et al. Highly efficient primary amine organocatalysts for the direct asymmetric aldol reaction in brine[J]. Tetrahedron: Asymmetry, 2009, 20(12): 1419-1424.
  • 9HEGEDUS L S, Imwinkelried R. Synthesis of (aminocarbene)chromium(0) complexes by the reaction of NazCr(CO)s with amides in the presence o{ trimethylsilyl chloride[J]. Organometallics, 1988, 7(3): 702-706.
  • 10宋霞,陈敏,孙露.二氯亚砜-甲醇溶液中合成氨基酸甲酯盐酸盐的研究[J].化学试剂,2007,29(11):687-688. 被引量:25

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