3,4-Dichlorophenyl sulfate

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 有机硫酸及其衍生物
• 英文名称: 3,4-Dichlorophenyl sulfate
• 英文别名: (3,4-Dichlorophenyl) hydrogen sulfate
• 化学式: C₆H₄Cl₂O₄S
• 分子量: 243.067
• InChiKey: GLFMSGGAQICNDU-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  13
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  72
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  3,4-Dichlorophenyl sulfate 在 alkaline phosphatase 作用下， 以 various solvent(s) 为溶剂， 生成 3,4-二氯苯酚钠
  参考文献：
  名称：

  Do Electrostatic Interactions with Positively Charged Active Site Groups Tighten the Transition State for Enzymatic Phosphoryl Transfer?

  摘要：

  The effect of electrostatic interactions on the transition-state character for enzymatic phosphoryl transfer has been a subject of much debate. In this work, we investigate the transition state for alkaline phosphatase (AP) using linear free-energy relationships (LIFERs). We determined k(cat)/K-M for a series of aryl sulfate ester monoanions to obtain the Bronsted coefficient, beta(lg)., and compared the value to that obtained previously for a series of aryl phosphorothioate ester dianion substrates. Despite the difference in substrate charge, the observed Bronsted coefficients for AP-catalyzed aryl sulfate and aryl phosphorothioate hydrolysis (-0.76 +/- 0.14 and -0.77 +/- 0.10, respectively) are strikingly similar, with steric effects being responsible for the uncertainties in these values. Aryl sulfates and aryl phosphates react via similar loose transition states in solution. These observations suggest an apparent equivalency of the transition states for phosphorothioate and sulfate hydrolysis reactions at the AP active site and, thus, negligible effects of active site electrostatic interactions on charge distribution in the transition state.

  DOI：

  10.1021/ja0480421
• 作为产物：
  描述：

  3,4-二氯苯酚 在 三氧化硫 作用下， 以 一氟三氯甲烷 为溶剂， 反应 0.5h， 以14%的产率得到4,5-dichloro-2-sulfooxybenzenesulfonic acid
  参考文献：
  名称：

  磺化和在氯-和二氯苯酚，3-氟苯酚和的硫酸化反应（2,3-，2,4-和3,4-二氯苯氧基）乙酸用浓硫酸和三氧化硫†往最‡ §

  摘要：

  氯和二氯苯酚已在非质子传递溶剂中用硫酸和SO 3磺化。在用浓硫酸水溶液进行磺化反应中，磺酸异构体的分布主要取决于羟基取代基的邻位和对位和活化作用。这也是使用不超过1.0当量的SO 3的非质子磺化反应的决定因素。当使用大量的SO 3时，磺化异构体的分布越来越多地通过相应的苯基硫酸氢盐的额外磺化来确定，其中-OSO 3 H取代基是失活的，主要是对-（进而邻）指挥。

  DOI：

  10.1002/recl.19881070303

文献信息

• Sulfonation and sulfation in the reactions of the chloro- and dichlorophenols, 3-fluorophenol and (2,3-, 2,4- and 3,4-dichlorophenoxy)acetic acid with concentrated aqueous sulfuric acid and sulfur trioxide
  作者：Peter de Wit、Hans Cerfontain

  DOI：10.1002/recl.19881070303

  日期：——

  The chloro- and dichlorophenols have been sulfonated with sulfuric acid and with SO3 in aprotic solvents. In the sulfonations with concentrated aqueous sulfuric acid, the sulfonic acid isomer distribution is determined mainly by the ortho- and para-directing and activating effect of the hydroxy substituent; this is also the determining factor in the aprotic sulfonations using up to 1.0 equiv of SO3

  氯和二氯苯酚已在非质子传递溶剂中用硫酸和SO 3磺化。在用浓硫酸水溶液进行磺化反应中，磺酸异构体的分布主要取决于羟基取代基的邻位和对位和活化作用。这也是使用不超过1.0当量的SO 3的非质子磺化反应的决定因素。当使用大量的SO 3时，磺化异构体的分布越来越多地通过相应的苯基硫酸氢盐的额外磺化来确定，其中-OSO 3 H取代基是失活的，主要是对-（进而邻）指挥。
• Do Electrostatic Interactions with Positively Charged Active Site Groups Tighten the Transition State for Enzymatic Phosphoryl Transfer?
  作者：Ivana Nikolic-Hughes、Douglas C. Rees、Daniel Herschlag

  DOI：10.1021/ja0480421

  日期：2004.9.1

  The effect of electrostatic interactions on the transition-state character for enzymatic phosphoryl transfer has been a subject of much debate. In this work, we investigate the transition state for alkaline phosphatase (AP) using linear free-energy relationships (LIFERs). We determined k(cat)/K-M for a series of aryl sulfate ester monoanions to obtain the Bronsted coefficient, beta(lg)., and compared the value to that obtained previously for a series of aryl phosphorothioate ester dianion substrates. Despite the difference in substrate charge, the observed Bronsted coefficients for AP-catalyzed aryl sulfate and aryl phosphorothioate hydrolysis (-0.76 +/- 0.14 and -0.77 +/- 0.10, respectively) are strikingly similar, with steric effects being responsible for the uncertainties in these values. Aryl sulfates and aryl phosphates react via similar loose transition states in solution. These observations suggest an apparent equivalency of the transition states for phosphorothioate and sulfate hydrolysis reactions at the AP active site and, thus, negligible effects of active site electrostatic interactions on charge distribution in the transition state.