8-(4-methoxyphenyl)-1,4-dioxa-8-azaspiro[4.5]decane | 634904-81-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 哌啶类
• 英文名称: 8-(4-methoxyphenyl)-1,4-dioxa-8-azaspiro[4.5]decane
• CAS: 634904-81-7
• 化学式: C₁₄H₁₉NO₃
• 分子量: 249.31
• InChiKey: LZXSGMCHHKIONV-UHFFFAOYSA-N

物化性质

• 熔点：
  60.2-61.1 °C
• 沸点：
  405.1±45.0 °C(Predicted)
• 密度：
  1.19±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  18
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  30.9
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  8-(4-methoxyphenyl)-1,4-dioxa-8-azaspiro[4.5]decane 在 盐酸 作用下， 以74%的产率得到1-(4-甲氧基苯基)哌啶-4-酮
  参考文献：
  名称：

  N-芳基和N-杂芳基取代的哌啶酮的合成方法改进

  摘要：

  描述了一种快速有效制备N-芳基和N-杂芳基取代的哌啶酮的有效Pd（0）催化方案。使用X-Phos作为Pd（0）催化的Buchwald-Hartwig胺化反应的最佳配体，两步合成的总产率为50-70％，随后水解生成的缩酮。

  DOI：

  10.1016/j.tetlet.2007.02.053
• 作为产物：
  描述：

  4-氯苯甲醚 、 4-哌啶酮缩乙二醇 在 tris(dibenzylideneacetone)dipalladium (0) 、 P(i-BuNCH₂CH₂)3N sodium hydroxide 作用下， 以 甲苯 为溶剂， 反应 40.0h， 以89%的产率得到8-(4-methoxyphenyl)-1,4-dioxa-8-azaspiro[4.5]decane
  参考文献：
  名称：

  Scope and Limitations of Pd₂(dba)₃/P(i-BuNCH₂CH₂)₃N-Catalyzed Buchwald−Hartwig Amination Reactions of Aryl Chlorides

  摘要：

  Proazaphosphatrane ligands in combination with Pd-2(dba)(3) generate highly active catalysts for Buchwald-Hartwig amination of aryl chlorides. In particular, commercially available P(i-BuNCH2-CH2)(3)N is a highly general and efficient ligand, allowing the coupling of an electronically diverse set of aryl chlorides, including chloropyridines, with a wide variety of amines using 1 mol % of Pd at 100 degreesC. Either a 1:1 or 2:1 ratio of ligand to Pd was found to be effective. This catalyst system performs exceptionally well for sterically hindered substrates, even with only 0.25 mol % of Pd. It is shown that NaOH can also be used as the base (instead of NaO-t-Bu) allowing functionalized substrates to participate in these reactions.

  DOI：

  10.1021/jo048716q

文献信息

• [EN] NOVEL TETRAHYDROPYRIDOPYRIMIDINES AND TETRAHYDROPYRIDOPYRIDINES FOR THE TREATMENT AND PROPHYLAXIS OF HEPATITIS B VIRUS INFECTION<br/>[FR] NOUVELLES TÉTRAHYDROPYRIDOPYRIMIDINES ET TÉTRAHYDROPYRIDOPYRIDINES POUR LE TRAITEMENT ET LA PRÉVENTION D'UNE INFECTION PAR LE VIRUS DE L'HÉPATITE B
  申请人：HOFFMANN LA ROCHE

  公开号：WO2016107832A1

  公开（公告）日：2016-07-07

  The invention provides novel compounds having the general formula (I): wherein R1, R2, R3, Q, U,W, Z, X and Y are as described herein, compositions including the compounds and methods of using the compounds. These compounds are HbsAg inhibitors and are useful as medicaments for the treatment or prophylaxis of HBV infection.

  这项发明提供了具有一般式（I）的新化合物：其中R1、R2、R3、Q、U、W、Z、X和Y如本文所述，包括这些化合物的组合物以及使用这些化合物的方法。这些化合物是HbsAg抑制剂，可用作治疗或预防HBV感染的药物。
• PIFA-Promoted, Solvent-Controlled Selective Functionalization of C(sp²)–H or C(sp³)–H: Nitration via C–N Bond Cleavage of CH₃NO₂, Cyanation, or Oxygenation in Water
  作者：Chandrashekar Mudithanapelli、Lama Prema Dhorma、Mi-hyun Kim

  DOI：10.1021/acs.orglett.9b00751

  日期：2019.5.3

  CH3NO2) mediated by [bis(trifluoroacetoxy)iodo]benzene (PIFA) is described. The NO2 transfer from CH3NO2 to the aromatic group of the substrate is possible with careful selection of the solvent, NaX, and oxidant. In addition, the solvent-controlled C(sp2)–H functionalization can shift to an α-C(sp3)–H functionalization (cyanation or oxygenation) of the α-C(sp3)–H of cyclic amines.

  描述了由[双（三氟乙酰氧基）碘]苯（PIFA）介导的新型硝化作用（通过C（sp 3）–N破坏/ C（sp 2）–N与CH 3 NO 2形成）。的NO 2从CH转印3 NO 2到基板的芳族基团是可能的溶剂，的NaX，和氧化剂的仔细选择。此外，溶剂控制的C（SP 2）-H官能化可转移到一个α-C（SP 3）-H官能的α-C（SP的（氰化或氧合）3）-H的环胺。
• Ligand- and Base-Free Copper(II)-Catalyzed C−N Bond Formation:  Cross-Coupling Reactions of Organoboron Compounds with Aliphatic Amines and Anilines
  作者：Tan D. Quach、Robert A. Batey

  DOI：10.1021/ol035681s

  日期：2003.11.1

  [reaction: see text] A ligandless and base-free Cu-catalyzed protocol for the cross-coupling of arylboronic acids and potassium aryltrifluoroborate salts with primary and secondary aliphatic amines and anilines is described. The process utilizes catalytic copper(II) acetate monohydrate and 4 A molecular sieves in dichloromethane at slightly elevated temperatures under an atmosphere of oxygen. A broad

  [反应：见正文]描述了无芳基和无碱的Cu催化方案，用于芳基硼酸和芳基三氟硼酸钾盐与伯和仲脂族胺和苯胺的交叉偶联。该方法在氧气气氛下稍微升高的温度下利用催化的一水合乙酸铜（II）乙酸铜和4 A分子筛在二氯甲烷中。两个交叉偶联伙伴都可以耐受各种官能团。
• Metal-free late-stage C(sp²)–H functionalization of<i>N</i>-aryl amines with various sodium salts
  作者：Chandrashekar Mudithanapelli、Mi-hyun Kim

  DOI：10.1039/c9ob02217a

  日期：——

  Metal-free consecutive C(sp2)–X (X = Cl, Br, S, N) bond formations of N-aryl amines (cyclic, fused, carbamate, and aminium radicals) were achieved under mild conditions using [bis(trifluoroacetoxy)iodo]benzene (PIFA) and simple nonharmful sodium salts. This direct and selective C(sp2)–H functionalization showed excellent functional group compatibility, cost effectiveness, and late-stage applicability

  不含金属的连续的C（SP 2）-X（X =氯，溴，S，N）的键形成ñ -芳基胺（环状，稠合，氨基甲酸酯，和铵基团）使用[双温和的条件下实现（三氟乙酰氧基）碘]苯（PIFA）和简单的无害钠盐。这种直接和选择性的C（sp 2）–H官能化显示出优异的官能团相容性，成本效益和生物活性天然产物合成的后期适用性。提出了两种机制来解释邻位或对位偏爱以及CH 3 NO 2的加速作用。
• Novel Piperidine Derivative
  申请人：Ishikawa Shiho

  公开号：US20090137576A1

  公开（公告）日：2009-05-28

  Disclosed is a substance having an antagonistic effect on the binding of histamine to a histamine H3 receptor or an inhibitory effect on the activity which a histamine H3 receptor constantly exhibits. A compound represented by the formula (I) or a pharmaceutically acceptable salt thereof; (I) wherein R1 represents a phenyl group which may be substituted or the like and R2 represents a cyano group which may be substituted or the like, or R1 and R2 together form an aliphatic heterocylic ring which may be substituted; R3 represents a group represented by the formula (II-1) below; and all of X1 to X4 represent a carbon atom or the like: (II-1) where R4 and R5 represent a lower alkyl group or the like; and m1 represents an integer of 2 to 4.

  本发明涉及一种物质，其对组胺与组胺H3受体的结合具有拮抗作用，或对组胺H3受体不断表现的活性具有抑制作用。化合物由式(I)或其药学上可接受的盐表示；(I)其中R1代表可能被取代或类似的苯基团，R2代表可能被取代或类似的氰基团，或R1和R2一起形成可能被取代的脂肪族杂环环；R3代表由下式(II-1)表示的基团；X1到X4都表示碳原子或类似物：(II-1)其中R4和R5代表较低的烷基团或类似物；m1表示2到4的整数。