trifluoroacetic acid salt of L-valyl-L-pipecolic acid methyl ester | 133285-50-4

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: trifluoroacetic acid salt of L-valyl-L-pipecolic acid methyl ester
• CAS: 133285-50-4
• 化学式: C₂HF₃O₂*C₁₂H₂₂N₂O₃
• 分子量: 356.342
• InChiKey: GFNQZKIKEGSMGP-IYPAPVHQSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.16
• 重原子数：
  24.0
• 可旋转键数：
  3.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.79
• 拓扑面积：
  109.93
• 氢给体数：
  2.0
• 氢受体数：
  5.0

反应信息

• 作为反应物：
  描述：

  trifluoroacetic acid salt of L-valyl-L-pipecolic acid methyl ester 在 碳酸氢钠 作用下， 反应 2.0h， 以60%的产率得到(3S,6S)-3-isopropyl-1,4-diazabicyclo<4.4.0>decane-2,5-dione
  参考文献：
  名称：

  (3S,6S)-3-Isopropyl-1,4-diazabicyclo[4.4.0]decane-2,5-dione, C₁₁H₁₈N₂O₂: Bayesian statistics in data analysis

  摘要：

  C11H18N2O2, M(r) = 210.3, monoclinic, P2(1), a = 10.503 (4), b = 10.464 (7), c = 11.012 (4) angstrom, beta = 110.74 (2)-degrees, V = 1132 (1) angstrom 3, Z = 4, D(x) = 1.234 Mg m-3, lambda(Mo K-alpha) = 0.71073 angstrom, mu = 0.10 mm-1, F(000) = 456, room temperature, wR = 0.058, R = 0.102 for 2518 observed reflections out of 2538 measured, and 270 variables. The compound, for which the synthesis is also reported, consists of a piperidine ring in the chair conformation and a diketopiperazine ring in a very shallow boat form with C(3) and C(6) as bowsprits. The two rings are cis fused. The isopropyl group, pseudo-axially bonded, is folded over the diketopiperazine ring. The unit cell contains two symmetrically independent molecules A and B. Infinite chains, consisting exclusively either of type A or type B molecules, are linked by intermolecular N(4)-H...O(1) bonds. To compensate for the systematic weakness of reflections with h + l = odd, a new data analysis scheme was employed, based on Bayesian statistics. It led to an employed, based on Bayesian statistics. It led to an increase in the number of observed reflections from 1155 to 2518. The comparison between a refinement based on 1155 and one based on 2518 reflections showed that the Bayesian re-evaluation of data decreases the final e.s.d.'s considerably and does not create any detectable artefacts.

  DOI：

  10.1107/s0108768190007868
• 作为产物：
  描述：

  N-(n-butoxycarbonyl)-L-valine 在 吡啶 、 三乙胺 作用下， 以 甲苯 为溶剂， 反应 21.25h， 生成 trifluoroacetic acid salt of L-valyl-L-pipecolic acid methyl ester
  参考文献：
  名称：

  (3S,6S)-3-Isopropyl-1,4-diazabicyclo[4.4.0]decane-2,5-dione, C₁₁H₁₈N₂O₂: Bayesian statistics in data analysis

  摘要：

  C11H18N2O2, M(r) = 210.3, monoclinic, P2(1), a = 10.503 (4), b = 10.464 (7), c = 11.012 (4) angstrom, beta = 110.74 (2)-degrees, V = 1132 (1) angstrom 3, Z = 4, D(x) = 1.234 Mg m-3, lambda(Mo K-alpha) = 0.71073 angstrom, mu = 0.10 mm-1, F(000) = 456, room temperature, wR = 0.058, R = 0.102 for 2518 observed reflections out of 2538 measured, and 270 variables. The compound, for which the synthesis is also reported, consists of a piperidine ring in the chair conformation and a diketopiperazine ring in a very shallow boat form with C(3) and C(6) as bowsprits. The two rings are cis fused. The isopropyl group, pseudo-axially bonded, is folded over the diketopiperazine ring. The unit cell contains two symmetrically independent molecules A and B. Infinite chains, consisting exclusively either of type A or type B molecules, are linked by intermolecular N(4)-H...O(1) bonds. To compensate for the systematic weakness of reflections with h + l = odd, a new data analysis scheme was employed, based on Bayesian statistics. It led to an employed, based on Bayesian statistics. It led to an increase in the number of observed reflections from 1155 to 2518. The comparison between a refinement based on 1155 and one based on 2518 reflections showed that the Bayesian re-evaluation of data decreases the final e.s.d.'s considerably and does not create any detectable artefacts.

  DOI：

  10.1107/s0108768190007868