1-bromo-4-methoxy-9H-xanthen-9-one | 367940-39-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡喃
• 英文名称: 1-bromo-4-methoxy-9H-xanthen-9-one
• 英文别名: 1-bromo-4-methoxyxanthone；1-bromo-4-methoxyxanthen-9-one
• CAS: 367940-39-4
• 化学式: C₁₄H₉BrO₃
• 分子量: 305.128
• InChiKey: WVKZCLYPPVXAIP-UHFFFAOYSA-N

物化性质

• 熔点：
  208 °C
• 沸点：
  437.3±45.0 °C(Predicted)
• 密度：
  1.574±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.6
• 重原子数：
  18
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.07
• 拓扑面积：
  35.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  1-bromo-4-methoxy-9H-xanthen-9-one 在 dimethyl sulfide borane 、 zinc(II) iodide 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 5.0h， 生成 (1-bromo-4-methoxy-9-phenyl-9H-xanthen-9-yl)methylamine
  参考文献：
  名称：

  苯并[4,3,2- cd ]异吲哚啉-2-酮和苯并[4,3,2- de ]异喹啉-3-酮的合成。氨基甲酸酯的亲电与阴离子环化

  摘要：

  由4-甲氧基-9 H-黄嘌呤的全合成chromeno [4,3,2- cd ]异吲哚啉-2-酮6a – d和chromeno [4,3,2- de ]异喹啉-3-酮15a – b由4-甲氧基-9 H-黄嘌呤合成-9-一。通过相应的氨基甲酸酯前体的分子内亲电和阴离子环化，试图构建氮化环。对于异吲哚啉酮，仅阴离子环化是可能的，但是对于异喹啉酮，亲电和阴离子途径均提供优异的产率。

  DOI：

  10.1016/j.tet.2004.07.089
• 作为产物：
  描述：

  4-甲氧基-9H-氧杂蒽-9-酮 在 溴 、 sodium acetate 作用下， 以 溶剂黄146 为溶剂， 以88%的产率得到1-bromo-4-methoxy-9H-xanthen-9-one
  参考文献：
  名称：

  [1] Benzopyrano [2,3,4- i，j ]异喹啉：从1-溴代黄嘌呤类化合物出发的新途径

  摘要：

  [1]苯并吡喃并[2,3,4- i，j ]异喹啉是通过异喹啉环的组装在三个步骤中由异黄酮合成的：乙烯基化，加氢胺化和黄酮羰基的闭环还原。

  DOI：

  10.1016/s0040-4039(01)00983-2

文献信息

• Intramolecular formal [4+2] cycloaddition reactions of secondary and tertiary aryldiacetylene alcohols
  作者：David Rodrı́guez、Domingo Quintás、Alberto Garcı́a、Carlos Saá、Domingo Domı́nguez

  DOI：10.1016/j.tetlet.2004.04.096

  日期：2004.6

  Thermal and thionyl chloride induced cycloaromatizations of secondary and tertiary aryldiacetylene alcohols were studied. The secondary alcohol did not respond to thionyl chloride, but in all the other cases presumptive biradical intermediates evolved either by intramolecular radical coupling or, when derived from a xanthene scaffold, by intramolecular radical acylation to a diketone that finally afforded

  研究了热和亚硫酰氯诱导的仲和叔芳基二乙炔醇的环芳构化。仲醇对亚硫酰氯没有反应，但在所有其他情况下，推测的双自由基中间体是通过分子内自由基偶联或当从x吨骨架衍生时，通过分子内自由基酰化为二酮而最终形成对亚甲基醌而演化而来的。。
• [1]Benzopyrano[2,3,4-i,j]isoquinolines: a new, versatile route from 1-bromoxanthones
  作者：Alberto Garcı́a、Domingo Domı́nguez

  DOI：10.1016/s0040-4039(01)00983-2

  日期：2001.7

  [1]Benzopyrano[2,3,4-i,j]isoquinolines were synthesized from a bromoxanthone by assembly of the isoquinoline ring in three steps: vinylation, hydroamination and ring-closing reduction of the xanthone carbonyl.

  [1]苯并吡喃并[2,3,4- i，j ]异喹啉是通过异喹啉环的组装在三个步骤中由异黄酮合成的：乙烯基化，加氢胺化和黄酮羰基的闭环还原。
• C-TERMINAL AMIDATION OF POLYPEPTIDES
  申请人：Sun Chengzao

  公开号：US20140058070A1

  公开（公告）日：2014-02-27

  There are provided compounds and methods for amidating the C-terminus of a polypeptide. The method include reacting a polypeptide which includes a C-terminal thioester or C-terminal selenoester with any one of a defined set of auxiliary molecules under conditions suitable to produce a polypeptide adduct which includes the auxiliary molecule chemically bound at the C-terminal of the polypeptide. In the subsequent step, the auxiliary molecule is removed from the C-terminal of the polypeptide adduct under conditions suitable to produce an amidated polypeptide.
• US9249181B2
  申请人：——

  公开号：US9249181B2

  公开（公告）日：2016-02-02
• [EN] C-TERMINAL AMIDATION OF POLYPEPTIDES<br/>[FR] AMIDATION C-TERMINALE DE POLYPEPTIDES
  申请人：AMYLIN PHARMACEUTICALS INC

  公开号：WO2012036962A2

  公开（公告）日：2012-03-22

  There are provided compounds and methods for amidating the C-terminus of a polypeptide. The method include reacting a polypeptide which includes a C-terminal thioester or C-terminal selenoester with any one of a defined set of auxiliary molecules under conditions suitable to produce a polypeptide adduct which includes the auxiliary molecule chemically bound at the C- terminal of the polypeptide. In the subsequent step, the auxiliary molecule is removed from the C-terminal of the polypeptide adduct under conditions suitable to produce an amidated polypeptide.