(Z)-4-(propylamino)but-3-en-2-one | 51287-94-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (Z)-4-(propylamino)but-3-en-2-one
• CAS: 51287-94-6
• 化学式: C₇H₁₃NO
• 分子量: 127.186
• InChiKey: PGXCOTMQKOPYOF-XQRVVYSFSA-N

物化性质

• 沸点：
  212.5±23.0 °C(Predicted)
• 密度：
  0.885±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  9
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  29.1
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (Z)-4-(propylamino)but-3-en-2-one 、 (E)-4-(6-methoxy-1-oxo-tetralin-2-yl)but-2-enal 在 sodium sulfate 、 scandium tris(trifluoromethanesulfonate) 作用下， 以 二氯甲烷 为溶剂， 以45%的产率得到2-[[3-acetyl-1-propyl-4H-pyridin-4-yl]methyl]-6-methoxy-tetralin-1-one
  参考文献：
  名称：

  Access to Highly Enantioenriched Donepezil-like 1,4-Dihydropyridines as Promising Anti-Alzheimer Prodrug Candidates via Enantioselective Tsuji Allylation and Organocatalytic Aza-Ene-Type Domino Reactions

  摘要：

  This work aims at exploiting both the enantioselective Tsuji allylation of allyl carbonate 6 and an organocatalytic aza-ene-type domino reaction between enal 3a and beta-enaminone 4a to develop a straightforward access to all of the four possible stereoisomers of a donepezil-like 1,4-dihydropyridine 1a (er up to 99.5:0.5; overall yield up 64%), an anti-Alzheimer's prodrug candidate. This strategy was extended to the preparation of other enantioenriched 1,4-dihydropyridines 1b-i (eight examples), highlighting its potential in the development of these chiral AChE inhibitors.

  DOI：

  10.1021/acs.joc.8b01442
• 作为产物：
  描述：

  正丙胺 、 4-甲氧基-3-丁烯-2-酮 反应 2.0h， 以98%的产率得到(Z)-4-(propylamino)but-3-en-2-one
  参考文献：
  名称：

  Access to Highly Enantioenriched Donepezil-like 1,4-Dihydropyridines as Promising Anti-Alzheimer Prodrug Candidates via Enantioselective Tsuji Allylation and Organocatalytic Aza-Ene-Type Domino Reactions

  摘要：

  This work aims at exploiting both the enantioselective Tsuji allylation of allyl carbonate 6 and an organocatalytic aza-ene-type domino reaction between enal 3a and beta-enaminone 4a to develop a straightforward access to all of the four possible stereoisomers of a donepezil-like 1,4-dihydropyridine 1a (er up to 99.5:0.5; overall yield up 64%), an anti-Alzheimer's prodrug candidate. This strategy was extended to the preparation of other enantioenriched 1,4-dihydropyridines 1b-i (eight examples), highlighting its potential in the development of these chiral AChE inhibitors.

  DOI：

  10.1021/acs.joc.8b01442

文献信息

• Nuclear magnetic resonance spectral study of β-aminoenones
  作者：Choji Kashima、Hiromu Aoyama、Yasuhiro Yamamoto、Takehiko Nishio、Kazutoshi Yamada

  DOI：10.1039/p29750000665

  日期：——

  The n.m.r. spectra of the four geometrical isomers of β-aminoenones, trans-s-trans, trans-s-cis, cis-s-trans, and cis-s-cis, are discussed. It was found that the chemical shift of the α-proton of β-aminoenones depends on both anisotropic effects and the electron density: δ=δ0–Δδstruc=ΔδAr+K(q–q0). Thus the conformation of non-rigid β-aminoenones can be determined from the observed and the calculated

  β-aminoenones的四个几何异构体的NMR谱，反式-小号-反式，反式-小号-顺式，顺式-小号-反式，以及顺式-小号-顺式，进行了讨论。据发现，β-aminoenones的α质子的化学位移取决于两个各向异性效应和电子密度：δ=δ 0 -Δδ STRUC =Δδ的Ar + ķ（q - q 0）。因此，可以根据观察到的和计算出的α-质子的化学位移来确定非刚性β-氨基烯酮的构象。