3-chloro-1-methylpyridinium triflate | 1255922-97-4

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 有机磺酸及其衍生物
• 英文名称: 3-chloro-1-methylpyridinium triflate
• CAS: 1255922-97-4
• 化学式: CF₃O₃S*C₆H₇ClN
• 分子量: 277.652
• InChiKey: GOYRBZHVROINEB-UHFFFAOYSA-M

计算性质

• 辛醇/水分配系数(LogP)：
  1.22
• 重原子数：
  16.0
• 可旋转键数：
  0.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.29
• 拓扑面积：
  61.08
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  四(三苯基膦)钯 、 3-chloro-1-methylpyridinium triflate 以 甲苯 为溶剂， 以90.8%的产率得到trans-chloro(3-hydro-1-methyl-3-pyridylidene)bis(triphenylphosphine)palladium(II) triflate
  参考文献：
  名称：

  Pyridine-Derived N-Heterocyclic Carbenes: An Experimental and Theoretical Evaluation of the Bonding in and Reactivity of Selected Normal and Abnormal Complexes of Nickel(II) and Palladium(II)

  摘要：

  We report a thorough investigation of a series of isomeric complexes with the general formula trans-(pyridylidene)M(PPh3)(2)Cl (M = Pd, Ni). For the first time, a systematic comparison of normal, abnormal, and remote bonding modes is presented. X-ray structural and C-13 NMR data indicate the importance of carbenoid mesomeric contributions in their compound class.. The catalytic performance of the palladium complexes trans-(pyridylidene)Pd(PPh3)(2)Cl as precursors in Suzuki-Miyaura-type cross-coupling suggests a correlation of remote bonding with catalyst robustness and effectivity. When metal precursors M(PPh3)(4) are reacted with 2,4-dichloropyridinium salts, preferential formation of remote carbene complexes occurs and indications are that electronic parameters rather than steric influences are responsible for the observed selectivity. Calculations at the BP86/TZ2P level of theory support interpretation of the results.

  DOI：

  10.1021/om100431u
• 作为产物：
  描述：

  3-氯吡啶 、 三氟甲烷磺酸甲酯 以 二氯甲烷 为溶剂， 反应 18.0h， 以98.5%的产率得到3-chloro-1-methylpyridinium triflate
  参考文献：
  名称：

  Pyridine-Derived N-Heterocyclic Carbenes: An Experimental and Theoretical Evaluation of the Bonding in and Reactivity of Selected Normal and Abnormal Complexes of Nickel(II) and Palladium(II)

  摘要：

  We report a thorough investigation of a series of isomeric complexes with the general formula trans-(pyridylidene)M(PPh3)(2)Cl (M = Pd, Ni). For the first time, a systematic comparison of normal, abnormal, and remote bonding modes is presented. X-ray structural and C-13 NMR data indicate the importance of carbenoid mesomeric contributions in their compound class.. The catalytic performance of the palladium complexes trans-(pyridylidene)Pd(PPh3)(2)Cl as precursors in Suzuki-Miyaura-type cross-coupling suggests a correlation of remote bonding with catalyst robustness and effectivity. When metal precursors M(PPh3)(4) are reacted with 2,4-dichloropyridinium salts, preferential formation of remote carbene complexes occurs and indications are that electronic parameters rather than steric influences are responsible for the observed selectivity. Calculations at the BP86/TZ2P level of theory support interpretation of the results.

  DOI：

  10.1021/om100431u

文献信息

• Traceless Peptide and Protein Modification via Rational Tuning of Pyridiniums
  作者：Chuan Wan、Yichi Zhang、Jinpeng Wang、Yun Xing、Dongyan Yang、Qinhong Luo、Jianbo Liu、Yuxin Ye、Zhihong Liu、Feng Yin、Rui Wang、Zigang Li

  DOI：10.1021/jacs.3c11864

  日期：2024.1.31