6,8-difluoro-2H-chromene-3-carboxamide | 1151797-94-2

• 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: 6,8-difluoro-2H-chromene-3-carboxamide
• CAS: 1151797-94-2
• 化学式: C₁₀H₇F₂NO₂
• 分子量: 211.168
• InChiKey: WZLIVOXVWUBUKM-UHFFFAOYSA-N

物化性质

• 沸点：
  405.4±45.0 °C(Predicted)
• 密度：
  1.451±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.1
• 重原子数：
  15
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.1
• 拓扑面积：
  52.3
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  6,8-difluoro-2H-chromene-3-carboxamide 在 sodium hypochlorite 、 水 、 氢气 、 溶剂黄146 、 potassium hydroxide 、 sodium hydroxide 作用下， 以 甲醇 、 乙酸乙酯 为溶剂， 25.0~80.0 ℃ 、3.0 MPa 条件下， 反应 75.0h， 生成 (R)-1-(6,8-difluorochroman-3-yl)-2-thioxohexahydropyrrolo[2,3-d]imidazole-4-carboxylic acid tert-butyl ester
  参考文献：
  名称：

  Process Research for Multikilogram Production of Etamicastat: A Novel Dopamine β-Hydroxylase Inhibitor

  摘要：

  In order to develop a manufacturing route to etamicastat, three synthetic approaches to the pivotal chiral 3-aminochroman intermediate have been studied as well as four methods for the construction of the 2-aminoethyl imidazolethione fragment. The evolution of the synthetic strategy based on the early discovery route was described. By focusing on the use of readily available starting materials it was possible to avoid chromatography steps and expensive reagents, bringing about significant improvements in cost and throughput. The best route involves construction of the chiral centre by asymmetric hydrogenation.

  DOI：

  10.1021/op300012d
• 作为产物：
  描述：

  6,8-difluoro-2H-chromene-3-carbonitrile 在 硫酸 作用下， 以 溶剂黄146 为溶剂， 反应 1.0h， 以95%的产率得到6,8-difluoro-2H-chromene-3-carboxamide
  参考文献：
  名称：

  Process Research for Multikilogram Production of Etamicastat: A Novel Dopamine β-Hydroxylase Inhibitor

  摘要：

  In order to develop a manufacturing route to etamicastat, three synthetic approaches to the pivotal chiral 3-aminochroman intermediate have been studied as well as four methods for the construction of the 2-aminoethyl imidazolethione fragment. The evolution of the synthetic strategy based on the early discovery route was described. By focusing on the use of readily available starting materials it was possible to avoid chromatography steps and expensive reagents, bringing about significant improvements in cost and throughput. The best route involves construction of the chiral centre by asymmetric hydrogenation.

  DOI：

  10.1021/op300012d

文献信息

• [EN] PROCESSES FOR PREPARING MEDICAMENTS FOR THE TREATMENT OF CARDIOVASCULAR DISEASES AND INTERMEDIATES FOR USE THEREIN<br/>[FR] PROCÉDÉS DE PRÉPARATION DE MÉDICAMENTS POUR LE TRAITEMENT DE MALADIES CARDIOVASCULAIRES ET INTERMÉDIAIRES PRÉVUS À CET EFFET
  申请人：BIAL PORTELA & CA SA

  公开号：WO2015038022A1

  公开（公告）日：2015-03-19

  The present invention provides a compound of formula N wherein: X is CH2, oxygen or sulphur; R1, R2 and R3 are the same or different and signify hydrogens, halogens, alkyl, alkyloxy, hydroxy, nitro, alkylcarbonylamino, alkylamino or dialkylamino group, wherein N is in the form of the individual R- and S-enantiomer or a mixture of the (R)- and (S)-enantiomer. The present invention also provides a compound of formula MA. The present invention also provides processes for preparing the above compounds, and processes involving their use. The compounds are particularly useful as intermediates in the synthesis of peripherally-selective inhibitors of dopamine-ß-hydroxylase.

  本发明提供了一个公式为N的化合物，其中：X为CH2、氧或硫；R1、R2和R3相同或不同，表示氢、卤素、烷基、烷氧基、羟基、硝基、烷基羰基氨基、烷基氨基或二烷基氨基基团，其中N以单一的R-和S-对映体形式存在，或者是(R)-和(S)-对映体的混合物。本发明还提供了一个公式为MA的化合物。本发明还提供了制备上述化合物的方法，以及涉及它们使用的方法。这些化合物在外周选择性多巴胺-ß-羟化酶抑制剂的合成中特别有用。
• Processes for Preparing Medicaments for the Treatment of Cardiovascular Diseases and Intermediates for Use Therein
  申请人：Bial - Portela & CA., S.A.

  公开号：US20160221981A1

  公开（公告）日：2016-08-04

  The present invention provides a compound of formula N wherein: X is CH 2 , oxygen or sulphur; R 1 , R 2 and R 3 are the same or different and signify hydrogens, halogens, alkyl, alkyloxy, hydroxy, nitro, alkylcarbonylamino, alkylamino or dialkylamino group, wherein N is in the form of the individual R- and S-enantiomer or a mixture of the (R)- and (S)-enantiomer. The present invention also provides a compound of formula MA. The present invention also provides processes for preparing the above compounds, and processes involving their use. The compounds are particularly useful as intermediates in the synthesis of peripherally-selective inhibitors of dopamine-β-hydroxylase.

  本发明提供了一个化合物的公式N，其中：X是CH2，氧或硫；R1、R2和R3相同或不同，表示氢、卤素、烷基、烷氧基、羟基、硝基、烷基羰基氨基、烷基氨基或二烷基氨基基团，其中N以单个R-和S-对映体或(R)-和(S)-对映体的混合物形式存在。本发明还提供了一个化合物的公式MA。本发明还提供了制备上述化合物的方法以及涉及它们使用的方法。这些化合物在外周选择性多巴胺-β-羟化酶抑制剂的合成中特别有用。
• Process for the Preparation of 2H-Chromene-3-Carbamate Derivatives
  申请人：Broadbelt Brian

  公开号：US20100298580A1

  公开（公告）日：2010-11-25

  Compounds of formula I, V, VI and II, and processes for their preparation, wherein R 1 , R 2 and R 3 are the same or different and signify hydrogens, halogens, alkyl, alkyloxy, hydroxy, nitro, alkylcarbonylamino, alkylamino or dialkylamino group; and R 4 is alkyl or aryl. There is also provided a process for preparing a compound of formula B from the compounds of formula V and I.

  公式I、V、VI和II的化合物及其制备方法，其中R1、R2和R3相同或不同，表示氢、卤素、烷基、烷氧基、羟基、硝基、烷基羰基氨基、烷基氨基或二烷基氨基基团; 而R4是烷基或芳基。还提供了一种从公式V和I的化合物制备公式B化合物的方法。
• Processes for preparing medicaments for the treatment of cardiovascular diseases and intermediates for use therein
  申请人：Bial-Portela & CA., S.A.

  公开号：US10329268B2

  公开（公告）日：2019-06-25

  The present invention provides a compound of formula N wherein: X is CH2, oxygen or sulphur; R1, R2 and R3 are the same or different and signify hydrogens, halogens, alkyl, alkyloxy, hydroxy, nitro, alkylcarbonylamino, alkylamino or dialkylamino group, wherein N is in the form of the individual R- and S-enantiomer or a mixture of the (R)- and (S)-enantiomer. The present invention also provides a compound of formula MA. The present invention also provides processes for preparing the above compounds, and processes involving their use. The compounds are particularly useful as intermediates in the synthesis of peripherally-selective inhibitors of dopamine-β-hydroxylase.

  本发明提供了一种式 N 的化合物，其中：X为CH2、氧或硫；R1、R2和R3相同或不同，表示氢、卤素、烷基、烷氧基、羟基、硝基、烷基羰基氨基、烷基氨基或二烷基氨基，其中N为单独的R-和S-对映体或(R)-和(S)-对映体的混合物形式。本发明还提供了式 MA 的化合物。本发明还提供了制备上述化合物的工艺以及涉及其使用的工艺。这些化合物作为合成多巴胺-β-羟化酶外周选择性抑制剂的中间体特别有用。
• [EN] PROCESS FOR THE PREPARATION OF 2H-CHROMENE-3-CARBAMATE DERIVATIVES<br/>[FR] PROCÉDÉ
  申请人：BIAL PORTELA & CA SA

  公开号：WO2009064210A3

  公开（公告）日：2009-12-30