2-bromo-3,5,6-trimethylphenol | 204065-40-7

• 分子结构分类: 有机化合物 - 苯类化合物 - 酚类
• 英文名称: 2-bromo-3,5,6-trimethylphenol
• CAS: 204065-40-7
• 化学式: C₉H₁₁BrO
• 分子量: 215.09
• InChiKey: YHVVKGPPZIZLTE-UHFFFAOYSA-N

物化性质

• 沸点：
  259.1±35.0 °C(Predicted)
• 密度：
  1.406±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.4
• 重原子数：
  11
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  20.2
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  2-bromo-3,5,6-trimethylphenol 在 正丁基锂 、 三氟化硼乙醚 、 sodium hydride 、 potassium carbonate 、 三乙胺 、 三氟乙酸 作用下， 以 四氢呋喃 、 甲醇 、 N,N-二甲基乙酰胺 为溶剂， 反应 8.08h， 生成 (S)-1-<(2,3-dihydro-2,4,6,7-tetramethylbenzofuran-2-yl)methyl>-4-phenylpiperidine
  参考文献：
  名称：

  Synthesis of TAK-218 using (R)-2-methylglycidyl tosylate as a chiral building block

  摘要：

  We performed an asymmetric synthesis of (S)-2,3-dihydro-2,4,6,7-tetramethyl-2-[(4-phenyl-1-piperidinyl)-methyl]-5-benzofuranamine dihydrochloride (TAK-218, 1), a compound used for the treatment of traumatic and ischemic central nervous system injuries. Oxirane 6, which was synthesized from (R)-2-methylglycidyl tosylate, was treated with aqueous trifluoroacetic acid to afford benzofuranmethanol 7 with inversion of stereochemistry at the stereogenic center. Compound 7 was converted into 1 with high enantiomeric excess in four steps. (C) 1999 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0957-4166(99)00138-x
• 作为产物：
  描述：

  2,3,5-三甲基苯酚 在 溴 、 叔丁胺 作用下， 以 甲苯 为溶剂， 生成 2-bromo-3,5,6-trimethylphenol
  参考文献：
  名称：

  Synthesis of TAK-218 using (R)-2-methylglycidyl tosylate as a chiral building block

  摘要：

  We performed an asymmetric synthesis of (S)-2,3-dihydro-2,4,6,7-tetramethyl-2-[(4-phenyl-1-piperidinyl)-methyl]-5-benzofuranamine dihydrochloride (TAK-218, 1), a compound used for the treatment of traumatic and ischemic central nervous system injuries. Oxirane 6, which was synthesized from (R)-2-methylglycidyl tosylate, was treated with aqueous trifluoroacetic acid to afford benzofuranmethanol 7 with inversion of stereochemistry at the stereogenic center. Compound 7 was converted into 1 with high enantiomeric excess in four steps. (C) 1999 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0957-4166(99)00138-x

文献信息

• Aromatic substitution in ball mills: formation of aryl chlorides and bromides using potassium peroxomonosulfate and NaX
  作者：Robert Schmidt、Achim Stolle、Bernd Ondruschka

  DOI：10.1039/c2gc16508b

  日期：——

  Aryl chlorides and bromides are formed from arenes in a ball mill using KHSO5 and NaX (X = Cl, Br) as oxidant and halogen source, respectively. Investigation of the reaction parameters identified operating frequency, milling time, and the number of milling balls as the main influencing variables, as these determine the amount of energy provided to the reaction system. Assessment of liquid-assisted grinding conditions revealed, that the addition of solvents has no advantageous effect in this special case. Preferably activated arenes are halogenated, whereby bromination afforded higher product yields than chlorination. Most often reactions are regio- and chemoselective, since p-substitution was preferred and concurring side-chain oxidation of alkylated arenes by KHSO5 was not observed.

  芳基氯和芳基溴是通过在球磨机中使用KHSO5和NaX（X=Cl，Br）分别作为氧化剂和卤素源，从芳烃形成的。对反应参数的调查确定操作频率、研磨时间和研磨球数为主要影响变量，因为这些变量决定了向反应系统提供的能量。对液体辅助研磨条件的评估揭示，在这种特殊情况下，溶剂的添加没有优势效应。优先激活的芳烃被卤化，其中溴化得到的产物收率高于氯化。大多数反应具有区域选择性和化学选择性，因为更喜欢对位取代，而且没有观察到KHSO5对烷基化芳烃侧链的氧化作用。
• 3-phenoxy-4-pyridazinol derivatives and herbicide composition containing the same
  申请人：Tsukamoto Yoshihisa

  公开号：US20050037925A1

  公开（公告）日：2005-02-17

  A compound represented by the formula: [wherein R 1 represents a hydrogen atom, a halogen, atom, alkyl group, etc., R 2 represents a hydrogen atom, a halogen atom, alkyl group, etc., R 3 , R 4 , R 5 , R 6 and R 7 each independently represent a hydrogen atom, a halogen atom, a substitutable alkyl group, a substitutable alkenyl group, alkynyl group, a substituteable cycloalkyl group, etc., or R 3 , R 4 , R 5 , R 6 and R 7 may form a ring which may be substituted, which is formed by the adjacent two of them with carbon atoms to which the respective substituents are bonded, m and n each independently represent 0 or 1.] a salt thereof, an ester derivative thereof and an agricultural chemical containing the same as an effective ingredient, and a herbicidal composition containing the compound and a second herbicidally active compound as effective ingredients.

  一种化合物由以下式子表示：[其中R1代表氢原子，卤素原子，烷基团等，R2代表氢原子，卤素原子，烷基团等，R3，R4，R5，R6和R7各自独立地代表氢原子，卤素原子，可替换的烷基团，可替换的烯基团，炔基团，可替换的环烷基团等，或R3，R4，R5，R6和R7可以形成一个环，该环可以被取代，该环由相邻的两个碳原子形成，这些碳原子与相应的取代基团相连，m和n各自独立地代表0或1。]其盐，酯衍生物及含有该化合物为有效成分的农药，以及含有该化合物和第二种草甘膦活性化合物为有效成分的除草剂组合物。
• 3-Phenoxy-4-pyridazinol derivatives and herbicidal composition containing the same
  申请人：Tsukamoto Yoshihisa

  公开号：US20100041555A1

  公开（公告）日：2010-02-18

  A compound represented by the formula: [wherein R 1 represents a hydrogen atom, a halogen atom, alkyl group, etc., R 2 represents a hydrogen atom, a halogen atom, alkyl group, etc., R 3 , R 4 , R 5 , R 6 and R 7 each independently represent a hydrogen atom, a halogen atom, a substitutable alkyl group, a substitutable alkenyl group, alkynyl group, a substitutable cycloalkyl group, etc., or R 3 , R 4 , R 5 , R 6 and R 7 may form a ring which may be substituted, which is formed by the adjacent two of them with carbon atoms to which the respective substituents are bonded, m and n each independently represent 0 or 1.] a salt thereof, an ester derivative thereof and an agricultural chemical containing the same as an effective ingredient, and a herbicidal composition containing the compound and a second herbicidally active compound as effective ingredients.

  一种化合物，其化学式为：[其中R1代表氢原子、卤素原子、烷基等，R2代表氢原子、卤素原子、烷基等，R3、R4、R5、R6和R7各自独立地代表氢原子、卤素原子、可替换的烷基、可替换的烯基、炔基、可替换的环烷基等，或R3、R4、R5、R6和R7可形成一个环，该环可以被取代，由它们中的相邻两个碳原子形成，各自带有相应的取代基，m和n各自独立地代表0或1。]其盐、酯衍生物和含有该化合物作为有效成分的农药，以及含有该化合物和第二种除草活性化合物作为有效成分的除草剂组合物。
• US6172085
  申请人：——

  公开号：——

  公开（公告）日：——
• 3-PHENOXY-4-PYRIDAZINOL DERIVATIVE AND HERBICIDE COMPOSITION CONTAINING THE SAME
  申请人：MITSUI CHEMICALS AGRO, INC.

  公开号：EP1426365B9

  公开（公告）日：2009-10-21