N-(2,5-dimethylphenyl)-N-methyl-3-phenylprop-2-ynamide | 1013905-83-3

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: N-(2,5-dimethylphenyl)-N-methyl-3-phenylprop-2-ynamide
• CAS: 1013905-83-3
• 化学式: C₁₈H₁₇NO
• 分子量: 263.339
• InChiKey: LNFNSVZHJWEFRB-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.3
• 重原子数：
  20
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.17
• 拓扑面积：
  20.3
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  N-(2,5-dimethylphenyl)-N-methyl-3-phenylprop-2-ynamide 在 N-溴代丁二酰亚胺(NBS) 、 水 作用下， 以 乙腈 为溶剂， 反应 24.0h， 以61%的产率得到3-bromo-1,6,9-trimethyl-4-phenyl-1-azaspiro[4.5]deca-3,6,9-triene-2,8-dione
  参考文献：
  名称：

  Intramolecular ipso-Halocyclization of 4-(p-Unsubstituted-aryl)-1-alkynes Leading to Spiro[4,5]trienones: Scope, Application, and Mechanistic Investigations

  摘要：

  A new, general method for the synthesis of spiro[4,5]trienores is described by the intramolecular ipso-halocyclization of 4-(p-unsubstituted-aryl)-1-alkynes. In the presence of halide electrophiles, a variety of 4-(p-unsubstituted-aryl)-1-alkynes underwent the intramolecular ipso-halocyclization with water smoothly, affording the corresponding halo-substituted spiro[4,5]trienones in moderate to good yields. The obtained spiro[4,5]trienones can be applied in constructing the azaquaternary tricyclic skeleton via Pd-catalyzed Heck reaction. Notably, the prepared spiro[4,5]trienones and azaquaternary tricycles are of importance in the areas of pharmaceuticals and agrochemicals. The mechanism of the intramolecular ipso-halocyclization reaction is also discussed according to the O-18-labeling experiments and DFT calculations.

  DOI：

  10.1021/jo300037n

文献信息

• Transformations of N-arylpropiolamides to indoline-2,3-diones and acids via C≡C triple bond oxidative cleavage and C(sp2)–H functionalization
  作者：Ming-Bo Zhou、Yang Li、Xuan-Hui Ouyang、Jin-Heng Li

  DOI：10.1007/s11426-019-9633-x

  日期：2020.2

  A new palladium-catalyzed oxidative conversion of N-arylpropiolamides and H2O to various indoline-2,3-diones and acids through the C≡C triple bond cleavage and C(sp2)–H functionalization is described, which is promoted by a cooperative action of catalytic CuBr2, 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) and O2. The method provides a practical tool for transformations of alkynes by means of a C–H

  描述了通过C tripleC三键裂解和C（sp 2）-H官能化作用，将新的钯催化的N-芳基丙酰胺和H 2 O氧化转化为各种二氢吲哚-2,3-二酮和酸的过程，这一点受到促进。催化的CuBr的协作动作2，2,2,6,6-四甲基-1-哌啶氧（TEMPO）和O 2。该方法通过C–H官能化策略为炔烃的转化提供了实用的工具，该方法可在单个反应中形成一个C–C键和多个C–O键，并具有高的底物相容性和出色的官能团耐受性。
• Electrophilic <i>ipso</i>-Halocyclization of <i>N</i>-Arylpropynamides with Polyfluoro­alkyl Alcohols: Selective Synthesis of 8-(Polyfluoroalkoxy)azaspiro[4.5]trienes
  作者：Zhi-Qiang Wang、Bo-Xiao Tang、Hong-Ping Zhang、Feng Wang、Jin-Heng Li

  DOI：10.1055/s-0028-1087972

  日期：——

  polyfluoroalkyl alcohols. In the presence of N-halosuccinimides (NXS), a variety of N-arylpropynamides underwent an electrophilic ipso-halocyclization reaction with poly­fluoroalkyl alcohols to afford the corresponding 8-(polyfluoroalkoxy)spiro[4.5]trienes in good yields. Note that molecular sieves can improve the yield of the reaction. electrophilic ipso-halocyclization - N-arylpropynamide - N-halosuccinimide

  为8-（多氟烷）合成了一种新的且有效的方法-1-氮杂螺[4.5]癸-3,6,9-三烯-2-酮已经经由展示了电本位的-halocyclization Ñ与多氟烷醇-arylpropynamides 。在存在Ñ -halosuccinimides（NXS），各种Ñ -arylpropynamides经历亲电本位-halocyclization与多氟烷醇的反应，得到相应的8-（多氟烷基）螺[4.5]以良好的收率三烯。注意分子筛可以提高反应的产率。 电本位-halocyclization - ñ -arylpropynamide - ñ -halosuccinimide -螺[4.5]癸烷-多氟烷取代
• Selective Synthesis of Spiro[4,5]trienyl Acetates via an Intramolecular Electrophilic <i>ipso</i>-Iodocyclization Process
  作者：Bo-Xiao Tang、Dong-Jun Tang、Shi Tang、Quan-Fu Yu、Yue-Hua Zhang、Yun Liang、Ping Zhong、Jin-Heng Li

  DOI：10.1021/ol703050z

  日期：2008.3.1

  A general and efficient intramolecular electrophilic ipso-iodocyclization of para-unactivated arylalkynes has been developed for the synthesis of spiro[4,5]trienyl acetates. In the presence of NIS (N-iodosuccimide) and HOAc, para-unactivated arylalkynes, including N-arylpropiolamides and phenyl 3-phenylpropiolate, underwent the intramolecular electrophilic ipso-iodocyclization smoothly in moderate to good yields.
• Intramolecular <i>ipso</i>-Halocyclization of 4-(<i>p</i>-Unsubstituted-aryl)-1-alkynes Leading to Spiro[4,5]trienones: Scope, Application, and Mechanistic Investigations
  作者：Bo-Xiao Tang、Yue-Hua Zhang、Ren-Jie Song、Dong-Jun Tang、Guo-Bo Deng、Zhi-Qiang Wang、Ye-Xiang Xie、Yuan-Zhi Xia、Jin-Heng Li

  DOI：10.1021/jo300037n

  日期：2012.3.16

  A new, general method for the synthesis of spiro[4,5]trienores is described by the intramolecular ipso-halocyclization of 4-(p-unsubstituted-aryl)-1-alkynes. In the presence of halide electrophiles, a variety of 4-(p-unsubstituted-aryl)-1-alkynes underwent the intramolecular ipso-halocyclization with water smoothly, affording the corresponding halo-substituted spiro[4,5]trienones in moderate to good yields. The obtained spiro[4,5]trienones can be applied in constructing the azaquaternary tricyclic skeleton via Pd-catalyzed Heck reaction. Notably, the prepared spiro[4,5]trienones and azaquaternary tricycles are of importance in the areas of pharmaceuticals and agrochemicals. The mechanism of the intramolecular ipso-halocyclization reaction is also discussed according to the O-18-labeling experiments and DFT calculations.