2-(dimethylamino)-5-phenyl-1,3-oxazole | 93961-59-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 2-(dimethylamino)-5-phenyl-1,3-oxazole
• 英文别名: N,N-dimethyl-5-phenyloxazol-2-amine；2-dimethylamino-5-phenyloxazole；N,N-dimethyl-5-phenyl-1,3-oxazol-2-amine
• CAS: 93961-59-2
• 化学式: C₁₁H₁₂N₂O
• 分子量: 188.229
• InChiKey: YLXQFDAIKVDDCJ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  14
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.18
• 拓扑面积：
  29.3
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  2-(dimethylamino)-5-phenyl-1,3-oxazole 在 高氯酸 、 ammonium acetate 作用下， 以 乙醇 、 乙腈 为溶剂， 反应 3.0h， 生成 Dimethyl-(4-phenyl-1H-imidazol-2-yl)-amine; compound with perchloric acid
  参考文献：
  名称：

  A Simple Route to NewN(3)-Substituted 5-Aryl-2-(dialkylamino)-1,3-oxazolium Salts andN(1)-Substituted 4-Aryl-2-(dialkylamino)-1H-imidazoles

  摘要：

  In the reaction of N,N-dialkyl-dichloromethaniminium chlorides 11 with 2-aminoacetophenones 12, a general and simple route to heretofore unknown 5-aryl-substituted 2-(dialkylamino)-1,3-oxazolium salts 13 and 5-aryl-substituted 2-(dialkylamino)oxazoles 14 was found. From the 2-(dialkylamino)-1,3-oxazoles 14, the corresponding oxazolium salts 13 were obtained after alkylation with (MeO)(2)SO2. The new oxazolium salts 13 were converted to 1-substituted 4-aryl-2-(dialkylamino)-1H-imidazoles 9 by treatment with NH4OAc. The possible use of these 1H-imidazoles as dye educts was explored. Analytical data, as well as AMI calculations, reveal some remarkable differences between the structures of the neutral imidazoles 9 and their positively charged oxazolium precursors 13.

  DOI：

  10.1002/(sici)1522-2675(19991110)82:11<1981::aid-hlca1981>3.0.co;2-t
• 作为产物：
  描述：

  2-二氮杂-1-苯乙酮 、 二甲基氢胺 在 三氟化硼乙醚 作用下， 以29%的产率得到2-(dimethylamino)-5-phenyl-1,3-oxazole
  参考文献：
  名称：

  重氮羰基化合物的酸催化分解。二、2-或5-杂原子取代的恶唑的合成

  摘要：

  BF3 催化的 m-和 p-取代的 α-重氮苯乙酮在硫氰酸甲酯和硫氰酸乙酯过量时分解，分别得到相应的 2-甲硫基-和 2-乙硫基-5-芳基恶唑以及 s-烷基- n-芳酰基甲基硫代氨基甲酸酯和α-乙氧基苯乙酮。然而，通过二甲基氰胺与α-重氮苯乙酮反应产生的2-二甲氨基-5-芳基恶唑的产率很低。5-二甲氨基-或5-烷氧基-4-芳基-2-甲基恶唑是通过N,N-二甲基-α-(对硝基苯基)重氮乙酰胺或重氮乙酸烷基芳基酯与腈反应制备的。当使用苯基重氮乙酸乙酯或对氯苯基重氮乙酸甲酯时，烷基芳基乙醛酸的酮嗪与恶唑一起获得。

  DOI：

  10.1246/bcsj.57.2450

文献信息

• Direct Production of Enaminones from Terminal Alkynes via Rhodium-Catalyzed Reaction of Formamides with <i>N</i>-Sulfonyl-1,2,3-triazoles
  作者：Tomoya Miura、Yuuta Funakoshi、Takamasa Tanaka、Masahiro Murakami

  DOI：10.1021/ol5010774

  日期：2014.5.16

  A rhodium-catalyzed reaction of formamides with N-sulfonyl-1,2,3-triazoles is developed to formulate a new one-pot procedure for the direct synthesis of a-amino enaminones from terminal alkynes.
• Facile Gold-Catalyzed Heterocyclization of Terminal Alkynes and Cyanamides Leading to Substituted 2-Amino-1,3-Oxazoles
  作者：Valentin A. Rassadin、Vadim P. Boyarskiy、Vadim Yu. Kukushkin

  DOI：10.1021/acs.orglett.5b01592

  日期：2015.7.17

  Facile gold-catalyzed heterocyclization based upon intermolecular trapping of the generated alpha-oxo gold carbenes with various cyanamides (RRNCN)-R-2-N-3 (R-2/R-3 = Alk/Alk, -(CH2)(2)O(CH2)(2)-, Ar/Ar, Ar/H) has been developed. In most cases, 2-amino-1,3-oxazoles fiinctionalized at the nitrogen atom as well as at the fifth position of the heterocyclic ring (12 examples) were isolated hi good to moderate yields.
• IBATA, TOSHIKAZU;YAMASHITA, TSUYOSHI;KASHIUCHI, MAKOTO;NAKANO, SHYUJI;NAK+, BULL. CHEM. SOC. JAP., 1984, 57, N 9, 2450-2455
  作者：IBATA, TOSHIKAZU、YAMASHITA, TSUYOSHI、KASHIUCHI, MAKOTO、NAKANO, SHYUJI、NAK+

  DOI：——

  日期：——
• The Acid-catalyzed Decomposition of Diazo Carbonyl Compounds. II. Synthesis of 2- or 5-Heteroatom-substituted Oxazoles
  作者：Toshikazu Ibata、Tsuyoshi Yamashita、Makoto Kashiuchi、Shyuji Nakano、Hiroyuki Nakawa

  DOI：10.1246/bcsj.57.2450

  日期：1984.9

  The BF3-catalyzed decomposition of m- and p-substituted α-diazoacetophenones in excess of methyl thiocyanate and ethyl thiocyanate gave the corresponding 2-methylthio-, and 2-ethylthio-5-aryloxazoles, respectively in good yields along with s-alkyl-n-aroylmethylthiocarbamates and α-ethoxyacetophenones. However, yields of 2-dimethylamino-5-aryloxazoles by the reaction of dimethylcyanamide with α-diazoacetophenones

  BF3 催化的 m-和 p-取代的 α-重氮苯乙酮在硫氰酸甲酯和硫氰酸乙酯过量时分解，分别得到相应的 2-甲硫基-和 2-乙硫基-5-芳基恶唑以及 s-烷基- n-芳酰基甲基硫代氨基甲酸酯和α-乙氧基苯乙酮。然而，通过二甲基氰胺与α-重氮苯乙酮反应产生的2-二甲氨基-5-芳基恶唑的产率很低。5-二甲氨基-或5-烷氧基-4-芳基-2-甲基恶唑是通过N,N-二甲基-α-(对硝基苯基)重氮乙酰胺或重氮乙酸烷基芳基酯与腈反应制备的。当使用苯基重氮乙酸乙酯或对氯苯基重氮乙酸甲酯时，烷基芳基乙醛酸的酮嗪与恶唑一起获得。
• A Simple Route to NewN(3)-Substituted 5-Aryl-2-(dialkylamino)-1,3-oxazolium Salts andN(1)-Substituted 4-Aryl-2-(dialkylamino)-1H-imidazoles
  作者：Torsten Moschny、Horst Hartmann

  DOI：10.1002/(sici)1522-2675(19991110)82:11<1981::aid-hlca1981>3.0.co;2-t

  日期：1999.11.10

  In the reaction of N,N-dialkyl-dichloromethaniminium chlorides 11 with 2-aminoacetophenones 12, a general and simple route to heretofore unknown 5-aryl-substituted 2-(dialkylamino)-1,3-oxazolium salts 13 and 5-aryl-substituted 2-(dialkylamino)oxazoles 14 was found. From the 2-(dialkylamino)-1,3-oxazoles 14, the corresponding oxazolium salts 13 were obtained after alkylation with (MeO)(2)SO2. The new oxazolium salts 13 were converted to 1-substituted 4-aryl-2-(dialkylamino)-1H-imidazoles 9 by treatment with NH4OAc. The possible use of these 1H-imidazoles as dye educts was explored. Analytical data, as well as AMI calculations, reveal some remarkable differences between the structures of the neutral imidazoles 9 and their positively charged oxazolium precursors 13.