(Z)-1-(4-methoxyphenyl)-3-phenyl-3-sulfanylprop-2-en-1-one | 76526-09-5

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 直链 1,3-二芳基丙烷
• 英文名称: (Z)-1-(4-methoxyphenyl)-3-phenyl-3-sulfanylprop-2-en-1-one
• 英文别名: (Z)-3-hydroxy-3-(4-methoxyphenyl)-1-phenylprop-2-ene-1-thione；1-(4-methoxyphenyl)-3-phenyl-3-thioxopropan-1-one；β-Hydroxy-α-thiobenzoyl-p-methoxystyren
• CAS: 76526-09-5
• 化学式: C₁₆H₁₄O₂S
• 分子量: 270.352
• InChiKey: IJXXYIYPKAEPGP-PTNGSMBKSA-N

物化性质

• 沸点：
  439.8±55.0 °C(Predicted)
• 密度：
  1.214±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.01
• 重原子数：
  19.0
• 可旋转键数：
  4.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.06
• 拓扑面积：
  29.46
• 氢给体数：
  1.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  (Z)-1-(4-methoxyphenyl)-3-phenyl-3-sulfanylprop-2-en-1-one 在 potassium tert-butylate 作用下， 以 叔丁醇 为溶剂， 反应 4.0h， 生成 1-(4-chlorophenyl)-3-(4-methoxyphenyl)-5-phenyl-1H-pyrazole
  参考文献：
  名称：

  Cyclocondensation of Arylhydrazines with 1,3-Bis(het)arylmonothio-1,3-diketones and 1,3-Bis(het)aryl-3-(methylthio)-2-propenones: Synthesis of 1-Aryl-3,5-bis(het)arylpyrazoles with Complementary Regioselectivity

  摘要：

  Two efficient highly regioselective routes for the synthesis of unsymmetrically substituted 1-aryl-3,5-bis(het)arylpyrazoles with complementary regioselectivity starting from active methylene ketones have been reported. In the first protocol, the newly synthesized 1,3-bis(het)aryl-monothio-1,3-diketone precursors (prepared by condensation of active methylene ketones with het(aryl) dithioesters in the presence of sodium hydride) were reacted with arylhydrazines in refluxing ethanol under neutral conditions, furnishing 1-aryl-3,5-bis(het)arylpyrazoles 7, in which the het(aryl) moiety attached to the thiocarbonyl group of monothio-1,3-diketones is installed at the 3-position. In the second method, the corresponding 3-(methylthio)-1,3-bis(het)aryl-2-propenones (prepared in situ by base-induced alkylation of 1,3-monothiodiketones) were condensed with arylhydrazines in the presence of potassium tert-butoxide in. refluxing tert-butyl alcohol, yielding 1-aryl-3,5-bis(het)arylpyrazoles 9 with complementary regioselectivity (method A). The efficiency of this protocol was further improved by developing a one-pot, three-component procedure for the synthesis of pyrazoles 9, directly from active methylene ketones, by reacting in situ generated 3-(methylthio)-1,3-bis(het)aryl-2-propenones with arylhydrazines in the presence of sodium hydride (instead of potassium tert-butoxide as base). The structures and regiochemistry of newly synthesized pyrazoles were confirmed from their spectral and analytical data along with X-ray crystallographic data of three pairs of regioisomers.

  DOI：

  10.1021/jo400599e
• 作为产物：
  描述：

  1-(4-methoxyphenyl)-3-phenyl-3-thioxopropan-1-one 生成 (Z)-1-(4-methoxyphenyl)-3-phenyl-3-sulfanylprop-2-en-1-one
  参考文献：
  名称：

  β-硫代酮。第6部分。芳族β-硫代酮的电子吸收光谱。烯醇-烯硫醇互变异构现象的研究

  摘要：

  芳族β-硫代酮作为快速相互转化的Z-烯醇和Z-烯硫醇互变异构体的混合物存在于溶液中。电子吸收光谱在大约uv的可见光区域一般表现出四个吸收带。265（ArC O，π，π*; ArC Cπ ，π*），330（ArC Sπ ，π*; O CC CSπ，π*; C O n，π*），415（OC CC Sπ， π*）和520 nm（C S n，π*）。β-硫代酮被氢氧化钠转化为相应的阴离子。CNDO / B计算预测，β-硫代木酮酸酯中的负电荷会在OCCCS系统上离域，这表明同时存在镰刀或W形构型。β-硫代酮酸酯的约2个特征吸收带。分别将275和400 nm分配给涉及Ar–C C C–Ar'和S C C C C O发色团的π，π*跃迁。烯醇-烯硫醇互变异构平衡已通过低温光谱法进行了研究。在室温下的平衡常数（K 293已经发现3 － 5的）对应于4：1的烯醇-烯硫醇浓度比。已经发现，反应熵（ΔS r）对

  DOI：

  10.1039/p29800001768