8-bromo-6-chloro-2-phenyl-chroman-4-one | 927884-79-5

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 黄酮类化合物
• 英文名称: 8-bromo-6-chloro-2-phenyl-chroman-4-one
• 英文别名: 8-Bromo-6-chloro-2-phenyl-2,3-dihydrochromen-4-one；8-bromo-6-chloro-2-phenyl-2,3-dihydrochromen-4-one
• CAS: 927884-79-5
• 化学式: C₁₅H₁₀BrClO₂
• 分子量: 337.6
• InChiKey: YBBVZHLGXAUCAQ-UHFFFAOYSA-N

物化性质

• 熔点：
  98-100 °C
• 沸点：
  477.8±45.0 °C(Predicted)
• 密度：
  1.562±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.2
• 重原子数：
  19
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.13
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  8-bromo-6-chloro-2-phenyl-chroman-4-one 在 盐酸二甲胺 、 双三氟甲烷磺酰亚胺 作用下， 以 1,4-二氧六环 、 乙腈 为溶剂， 反应 0.17h， 生成 3-((benzyloxycarbonylamino)methyl)-8-bromo-6-chloro-2-phenyl-chroman-4-one
  参考文献：
  名称：

  Synthesis of 3-Aminomethyl-2-aryl- 8-bromo-6-chlorochromones

  摘要：

  An efficient synthetic route to Cbz-protected 3-aminomethyl-2-aryl-8-bromo-6-chlorochromones has been developed. 3-Aryl-1-(3-bromo-5-chloro-2-hydroxyphenyl)-2-propen-1-one or 2-aryl-8-bromo-6-chlorochroman-4-one could be reacted under Mannich conditions yielding 2-aryl-8-bromo-6-chloro-3-methylenechroman-4-one, which was further converted to the target compound via an aza-Michael reaction followed by an SeO2 oxidation. This procedure represents a new method to introduce a primary aminomethyl group at the 3-position of a 2-arylchromone scaffold. The Cbz-protected 3-aminomethyl-2-aryl-8-bromo-6-chlorochromones can, e.g., be used in the synthesis of chromone-based beta-turn peptidomimetics.

  DOI：

  10.1021/ol062478z
• 作为产物：
  描述：

  3'-溴-5'-氯-2'-羟基苯乙酮 在 盐酸 、 氢氧化钾 作用下， 以 乙醇 为溶剂， 反应 0.33h， 生成 8-bromo-6-chloro-2-phenyl-chroman-4-one
  参考文献：
  名称：

  Synthesis of 3-Aminomethyl-2-aryl- 8-bromo-6-chlorochromones

  摘要：

  An efficient synthetic route to Cbz-protected 3-aminomethyl-2-aryl-8-bromo-6-chlorochromones has been developed. 3-Aryl-1-(3-bromo-5-chloro-2-hydroxyphenyl)-2-propen-1-one or 2-aryl-8-bromo-6-chlorochroman-4-one could be reacted under Mannich conditions yielding 2-aryl-8-bromo-6-chloro-3-methylenechroman-4-one, which was further converted to the target compound via an aza-Michael reaction followed by an SeO2 oxidation. This procedure represents a new method to introduce a primary aminomethyl group at the 3-position of a 2-arylchromone scaffold. The Cbz-protected 3-aminomethyl-2-aryl-8-bromo-6-chlorochromones can, e.g., be used in the synthesis of chromone-based beta-turn peptidomimetics.

  DOI：

  10.1021/ol062478z

文献信息

• CBr₄ catalyzed activation of α,β-unsaturated ketones
  作者：Shyamal Kanti Bera、Rajat Rajiv Maharana、Kousik Samanta、Prasenjit Mal

  DOI：10.1039/d2ob01223e

  日期：——

  the carbonyl group of α,β-unsaturated ketones. Carbon tetrabromide (CBr4) has been used as the sole reagent for the selective synthesis of flavanones and aza-flavanones from the corresponding 2′-hydroxy- and 2′-aminochalcones under metal-free and additive-free conditions. DFT calculations support the catalytic role of XB between the oxygen of chalcones and CBr4 in these reactions.

  我们在这里表明，弱相互作用，如卤素键 (XB) 可用于激活 α,β-不饱和酮的羰基。四溴化碳 (CBr 4 ) 已被用作在无金属和无添加剂条件下从相应的 2'-羟基和 2'-氨基查耳酮选择性合成黄烷酮和氮杂黄烷酮的唯一试剂。DFT 计算支持 XB 在这些反应中查耳酮的氧和 CBr 4之间的催化作用。
• Synthesis of 2-Alkyl-Substituted Chromone Derivatives Using Microwave Irradiation
  作者：Maria Fridén-Saxin、Nils Pemberton、Krystle da Silva Andersson、Christine Dyrager、Annika Friberg、Morten Grøtli、Kristina Luthman

  DOI：10.1021/jo802783z

  日期：2009.4.3

  A base-promoted condensation between 2-hydroxyacetophenones and aliphatic aldehydes has been studied. The reaction has been optimized to afford 2-alkyl-substituted 4-chromanones in an efficient manner using microwave heating. Performing the reaction using diisopropylamine in EtOH at 170 degrees C for 1 h gave moderate to high yields (43-88%). The 4-chromanones could be further converted into highly functionalized 2,3,6,8-tetrasubstituted chromones in which a 3-substituent (acetate, amine, or bromine) was introduced via straightforward chemical transformations.
• KHMDS Enhanced SmI₂-Mediated Reformatsky Type α-Cyanation
  作者：Tobias Ankner、Maria Fridén-Saxin、Nils Pemberton、Tina Seifert、Morten Grøtli、Kristina Luthman、Göran Hilmersson

  DOI：10.1021/ol100424y

  日期：2010.5.21

  A novel combination of SmI2, KHMDS, and TsCN can be utilized to introduce a cyano group into structurally diverse and highly sensitive 2-alkyl-chroman-4-ones. Subsequent oxidation allows the formed 2-alkyl-3-cyanochromones to be isolated in yields ranging from 49 to 77%. In addition, alpha-bromoketones and esters were found to undergo equally effective alpha-cyanation.
• Synthesis of 3-Aminomethyl-2-aryl- 8-bromo-6-chlorochromones
  作者：Erik A. A. Wallén、Kristian Dahlén、Morten Grøtli、Kristina Luthman

  DOI：10.1021/ol062478z

  日期：2007.2.1

  An efficient synthetic route to Cbz-protected 3-aminomethyl-2-aryl-8-bromo-6-chlorochromones has been developed. 3-Aryl-1-(3-bromo-5-chloro-2-hydroxyphenyl)-2-propen-1-one or 2-aryl-8-bromo-6-chlorochroman-4-one could be reacted under Mannich conditions yielding 2-aryl-8-bromo-6-chloro-3-methylenechroman-4-one, which was further converted to the target compound via an aza-Michael reaction followed by an SeO2 oxidation. This procedure represents a new method to introduce a primary aminomethyl group at the 3-position of a 2-arylchromone scaffold. The Cbz-protected 3-aminomethyl-2-aryl-8-bromo-6-chlorochromones can, e.g., be used in the synthesis of chromone-based beta-turn peptidomimetics.