tert-butyl 1-cyano-3,4-dihydroisoquinoline-2(1H)-carboxylate | 1118640-91-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 四氢异喹啉
• 英文名称: tert-butyl 1-cyano-3,4-dihydroisoquinoline-2(1H)-carboxylate
• 英文别名: (±)-tert-butyl 1-cyano-3,4-dihydroisoquinoline-2(1H)-carboxylate；2-tert-butoxycarbonyl-1-cyano-3,4-dihydro-1H-isoquinoline；t-butyl 1-cyano-3,4-dihydroisoquinoline-2(1H)-carboxylate；tert-butyl 1-cyano-3,4-dihydro-1H-isoquinoline-2-carboxylate
• CAS: 1118640-91-7
• 化学式: C₁₅H₁₈N₂O₂
• 分子量: 258.32
• InChiKey: WHGOWIJKICDUQA-UHFFFAOYSA-N

物化性质

• 沸点：
  410.7±45.0 °C(Predicted)
• 密度：
  1.15±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  19
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.47
• 拓扑面积：
  53.3
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  tert-butyl 1-cyano-3,4-dihydroisoquinoline-2(1H)-carboxylate 在 吡啶 、 氢气 、 三氟乙酸 、 sodium hydroxide 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 20.0h， 生成 吡喹酮
  参考文献：
  名称：

  Synthesis of new praziquantel analogues: Potential candidates for the treatment of schistosomiasis

  摘要：

  An efficient synthesis of antischistosomal drug praziquantel and analogues was achieved and the synthetic route designed was to afford structurally diverse analogues for better structure-activity relationship understanding. Total of nineteen PZQ analogues with structural variations at amide, piperazine and aromatic moieties have been synthesized and fully characterized. Among all the new analogues tested for antischistosomal activity, one dimethoxy tetrahydroisoquinoline analogue and two tetrahydro-beta-carboline analogues exhibited moderate activity against adult Schistosoma mansoni. Tetrahydro-beta-carboline analogues showed moderate activity whereas the presence of p-trifluoromethylbenzoyl and p-toluenesulphonyl moieties resulted in complete suppression of antischistosomal activity. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmcl.2011.11.108
• 作为产物：
  描述：

  二碳酸二叔丁酯 以 二氯甲烷 为溶剂， 反应 24.5h， 生成 tert-butyl 1-cyano-3,4-dihydroisoquinoline-2(1H)-carboxylate
  参考文献：
  名称：

  Synthesis of new praziquantel analogues: Potential candidates for the treatment of schistosomiasis

  摘要：

  An efficient synthesis of antischistosomal drug praziquantel and analogues was achieved and the synthetic route designed was to afford structurally diverse analogues for better structure-activity relationship understanding. Total of nineteen PZQ analogues with structural variations at amide, piperazine and aromatic moieties have been synthesized and fully characterized. Among all the new analogues tested for antischistosomal activity, one dimethoxy tetrahydroisoquinoline analogue and two tetrahydro-beta-carboline analogues exhibited moderate activity against adult Schistosoma mansoni. Tetrahydro-beta-carboline analogues showed moderate activity whereas the presence of p-trifluoromethylbenzoyl and p-toluenesulphonyl moieties resulted in complete suppression of antischistosomal activity. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmcl.2011.11.108

文献信息

• DDQ-Promoted Mild and Efficient Metal-Free Oxidative α-Cyanation of N-Acyl/Sulfonyl 1,2,3,4-Tetrahydroisoquinolines
  作者：Hong Kim、Heesun Yu、Hyoungsu Kim、Seok-Ho Kim、Dongjoo Lee

  DOI：10.3390/molecules23123223

  日期：——

  N-acyl/sulfonyl iminium ions with (n-Bu)3SnCN. Employing readily removable N-acyl/sulfonyl groups as protecting groups rather than N-aryl ones enables a wide range of applications in natural product synthesis. The synthetic utility of the method was illustrated using a short and efficient formal total synthesis of (±)-calycotomine in three steps.

  N-酰基/磺酰基 1,2,3,4-四氢异喹啉 (THIQ) 的温和且高效的无金属氧化 α-氰化反应已在环境温度下通过 DDQ 氧化和随后的 N-酰基/磺酰基亚胺的捕获完成(n-Bu)3SnCN 离子。使用易于去除的 N-酰基/磺酰基作为保护基团而不是 N-芳基使天然产物合成中的应用范围广泛。使用 (±)-calycotomine 的短而有效的形式全合成分三个步骤说明了该方法的合成效用。
• Direct electrochemical α-cyanation of N-protected cyclic amines
  作者：Samuel Shikuku Libendi、Yosuke Demizu、Osamu Onomura

  DOI：10.1039/b816598j

  日期：——

  α-Cyanation of N-protected cyclic amines was achieved using a direct electrochemical method. Unsubstituted N-protected cyclic amines were easily cyanated at the α-position using an undivided cell in high yields; moreover, α-cyanation of α′-substituted pyrrolidine and α′-,β′- or γ-substituted piperidines smoothly proceeded in high yield and with high to excellent diastereoselectivity. α-Substituted N-cyano-pyrrolidines and -piperidines were also cyanated at the more substituted position (the α-position) using a divided cell with high yield and high regioselectivity.

  通过直接电化学方法，实现了N-保护的环状胺的α-氰化。未取代的N-保护环状胺在无隔膜电池中易于在α位进行氰化，产率很高；此外，α'-取代的吡咯烷和α'、β'或γ-取代的哌啶也能顺利进行高产率的α-氰化，并具有高度至优异的非对映选择性。α-取代的N-氰基吡咯烷和哌啶在有隔膜电池中也能在更取代的位置（α位）进行氰化，产率高且具有高区域选择性。
• C(sp³ )−H Cyanation Promoted by Visible-Light Photoredox/Phosphate Hybrid Catalysis
  作者：Takayuki Wakaki、Kentaro Sakai、Takafumi Enomoto、Mio Kondo、Shigeyuki Masaoka、Kounosuke Oisaki、Motomu Kanai

  DOI：10.1002/chem.201801746

  日期：2018.6.7

  reaction mechanism of photo‐induced DNA cleavage in nature, a C(sp3)−H cyanation reaction promoted by visible‐light photoredox/phosphate hybrid catalysis was developed. Phosphate radicals, generated by one‐electron photooxidation of phosphate salt, functioned as a hydrogen‐atom‐transfer catalyst to produce nucleophilic carbon radicals from C(sp3)−H bonds with a high bond‐dissociation energy. The resulting

  受自然界中光诱导的DNA裂解反应机制的启发，开发了由可见光光氧化还原/磷酸盐混合催化促进的C（sp 3）-H氰化反应。磷酸根盐的单电子光氧化产生的磷酸根基团起着氢原子转移催化剂的作用，从具有高键解离能的C（sp 3）-H键产生亲核碳根基。产生的碳自由基被氰基自由基源（TsCN）捕获，生成CH氰化产物。由于氰基的高功能基团耐受性和多功能性，该反应对于实现简化的构建基合成和药物样分子的后期功能化非常有用。
• Mild and highly efficient metal-free oxidative α-cyanation of N-acyl/sulfonyl tetrahydroisoquinolines
  作者：Changcun Yan、Yuxiu Liu、Qingmin Wang

  DOI：10.1039/c4ra12922a

  日期：——

  A highly efficient metal-free oxidative α-cyanation reaction of N-acyl/sulfonyl tetrahydroisoquinolines under mild conditions was developed. The reaction uses 2,2,6,6-tetramethylpiperidine N-oxide fluoroborate salt (T+BF4−) as the oxidant and trimethylsilyl cyanide as the source of the cyano group.

  研究人员开发了一种温和条件下 N-酰基/磺酰基四氢异喹啉的高效无金属氧化δ-氰化反应。该反应以 2,2,6,6-四甲基哌啶 N-氧化物氟硼酸盐 (T+BF4â) 为氧化剂，以三甲基硅氰作为氰基来源。