N-methoxy-N-methyl-trans-3-(trifluoromethyl)cinnamamide | 243665-09-0

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 肉桂酸及其衍生物
• 英文名称: N-methoxy-N-methyl-trans-3-(trifluoromethyl)cinnamamide
• 英文别名: (E)-N-methoxy-N-methyl-3-[3-(trifluoromethyl)phenyl]prop-2-enamide
• CAS: 243665-09-0
• 化学式: C₁₂H₁₂F₃NO₂
• 分子量: 259.228
• InChiKey: CCHFIZMYJJILCW-VOTSOKGWSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  18
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  29.5
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  N-methoxy-N-methyl-trans-3-(trifluoromethyl)cinnamamide 在 草酰氯 、 potassium tert-butylate 、 sodium hydride 、 N,N-二甲基甲酰胺 作用下， 以 乙醚 、 二甲基亚砜 、 苯 为溶剂， 反应 25.0h， 生成 (1R,2R)-2-(3-Trifluoromethyl-phenyl)-cyclopropanecarbonyl chloride
  参考文献：
  名称：

  Picosecond radical kinetics. Rate constants for ring openings of 2-aryl-substituted cyclopropylcarbinyl radicals

  摘要：

  The kinetics of ring openings of a series of eight (trans-2-arylcyclopropyl)methyl radicals (1) were studied by indirect kinetic methods using Barton's PTOC esters as radical precursors and reaction with PhSeH as the competition reaction. The substituents were CF3, F, Me, and OMe located on both the para and meta positions of the aromatic ring. Syntheses of the radical precursors and the products of the radical reactions are described. Kinetics were determined between -43 and 25 degrees C in four cases (CF, and OMe substituents) and at 0 and 25 degrees C in the other four cases. The rate constants at 25 degrees C ranged from 1.0 x 10(11) s(-1) (p-CH3) to 4.1 x 10(11) s(-1) (p-CF,). The relatively large acceleration of the p-CF3 group, ca. 2.5 times as fast as the parent system with Ar = Ph, correlates well with Adam's Delta D substituent parameters but not with other radical substituent parameters. These calibrated radical rearrangements provide a new set of ultrafast reactions that can be applied in mechanistic probe studies.

  DOI：

  10.1139/cjc-77-5-6-1123
• 作为产物：
  描述：

  3-三氟甲基苯甲醛 、 N-甲氧基-N-甲基-2-(三苯基磷)乙酰胺N-甲氧基-N-甲基-2-(三苯基磷)乙酰胺 以 二氯甲烷 为溶剂， 反应 16.0h， 以99%的产率得到N-methoxy-N-methyl-trans-3-(trifluoromethyl)cinnamamide
  参考文献：
  名称：

  Picosecond radical kinetics. Rate constants for ring openings of 2-aryl-substituted cyclopropylcarbinyl radicals

  摘要：

  The kinetics of ring openings of a series of eight (trans-2-arylcyclopropyl)methyl radicals (1) were studied by indirect kinetic methods using Barton's PTOC esters as radical precursors and reaction with PhSeH as the competition reaction. The substituents were CF3, F, Me, and OMe located on both the para and meta positions of the aromatic ring. Syntheses of the radical precursors and the products of the radical reactions are described. Kinetics were determined between -43 and 25 degrees C in four cases (CF, and OMe substituents) and at 0 and 25 degrees C in the other four cases. The rate constants at 25 degrees C ranged from 1.0 x 10(11) s(-1) (p-CH3) to 4.1 x 10(11) s(-1) (p-CF,). The relatively large acceleration of the p-CF3 group, ca. 2.5 times as fast as the parent system with Ar = Ph, correlates well with Adam's Delta D substituent parameters but not with other radical substituent parameters. These calibrated radical rearrangements provide a new set of ultrafast reactions that can be applied in mechanistic probe studies.

  DOI：

  10.1139/cjc-77-5-6-1123

文献信息

• Picosecond radical kinetics. Rate constants for ring openings of 2-aryl-substituted cyclopropylcarbinyl radicals
  作者：Martin Newcomb、Seung-Yong Choi、Patrick H. Toy

  DOI：10.1139/cjc-77-5-6-1123

  日期：——

  The kinetics of ring openings of a series of eight (trans-2-arylcyclopropyl)methyl radicals (1) were studied by indirect kinetic methods using Barton's PTOC esters as radical precursors and reaction with PhSeH as the competition reaction. The substituents were CF3, F, Me, and OMe located on both the para and meta positions of the aromatic ring. Syntheses of the radical precursors and the products of the radical reactions are described. Kinetics were determined between -43 and 25 degrees C in four cases (CF, and OMe substituents) and at 0 and 25 degrees C in the other four cases. The rate constants at 25 degrees C ranged from 1.0 x 10(11) s(-1) (p-CH3) to 4.1 x 10(11) s(-1) (p-CF,). The relatively large acceleration of the p-CF3 group, ca. 2.5 times as fast as the parent system with Ar = Ph, correlates well with Adam's Delta D substituent parameters but not with other radical substituent parameters. These calibrated radical rearrangements provide a new set of ultrafast reactions that can be applied in mechanistic probe studies.