1-bromo-5-(1-naphthyl)-pentane | 123498-53-3

• 分子结构分类: 有机化合物 - 苯类化合物 - 萘
• 英文名称: 1-bromo-5-(1-naphthyl)-pentane
• 英文别名: 1-(5-bromopentyl)naphthalene
• CAS: 123498-53-3
• 化学式: C₁₅H₁₇Br
• 分子量: 277.204
• InChiKey: YHVZXJKTRNSRLP-UHFFFAOYSA-N

物化性质

• 沸点：
  381.6±21.0 °C(Predicted)
• 密度：
  1.265±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.9
• 重原子数：
  16
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为反应物：
  描述：

  1-bromo-5-(1-naphthyl)-pentane 在 rose bengal 氧气 、 magnesium 作用下， 以 四氢呋喃 为溶剂， 反应 1.5h， 生成 Acetic acid 1-(2-hydroxy-5-oxo-2,5-dihydro-furan-3-yl)-6-naphthalen-1-yl-hexyl ester
  参考文献：
  名称：

  Singlet oxygen oxidation of substituted furans to 5-hydroxy-2(5H)-furanone

  摘要：

  The conditions for the regiospecific singlet oxygen oxidation of various 2,4-disubstituted furans 9 to 4-substituted-2 (5H)-furanones 3 are developed. The presence of a C-2 substituent (e.g., trimethylsilyl, tert-butyldimethylsilyl, or tributylstannyl) in 9 is an absolute requirement for the formation of the 4-substituted-5-hydroxy-2(5H)-furanone regioisomer 3. When the C-2 substituent is triethylsilyl (TES) or TBDMS, however, apart from 3, the corresponding 5-trialkylsiloxy derivative 11 is also isolated in a significant amount. These silyl acetals are unexpectedly stable but can be hydrolyzed back to 3 on stirring with dilute acid. The formation of silyl acetals, to our knowledge, has never been reported in the singlet oxygen oxidation of (trialkylsilyl)furan. A plausible mechanism for their formation is proposed. The presence of a catalytic amount of water in the oxidation of 2-(trialkylsilyl)-4-substituted-furans not only eliminates the formation of the silyl acetals but also speeds up the rate of the oxidation process. Moreover, the oxidation can then be carried out at 0-degrees-C instead of at -78-degrees-C. Oxidation of 2-(1-hydroxyalkyl)-4-substituted-furans in the absence of a reducing agent gives little or no sign of 2,5-disubstituted-6-hydroxy-3(2H)-pyranone 23 but instead 26 selectively. Thus, the (1-hydroxy)alkyl group can be utilized as the trialkylsilyl or trialkylstannyl group in dictating the regioselectivity in the singlet oxygen oxidation of substituted furans.

  DOI：

  10.1021/jo00025a012
• 作为产物：
  描述：

  1,5-二溴戊烷 、 氰基萘 在 氨 、 lithium 、 叔丁醇 作用下， 以 四氢呋喃 、 氨 为溶剂， 以54%的产率得到1-(5-bromopentyl)-1-cyano-1,4-dihydronaphthalene
  参考文献：
  名称：

  芳烃的还原活化

  摘要：

  通过碱金属和烷基溴在液氨中的连续作用，苄腈、邻-、间-、对-甲苯腈和 1-萘甲腈的还原烷基化产生相应的烷基芳烃和 1-烷基-1-氰基环六-2,5-二烯。找到了目标合成指定产物的实验条件。基于芳香腈与 α,ω-二溴烷烃 Br(CH2)nBr (n = 3) 的双电子还原产物的相互作用合成 1-(ω-溴代烷基)-1-氰基环己-2,5-二烯的方法−5) 开发。

  DOI：

  10.1007/s11172-006-0366-0

文献信息

• Anti-inflammatory furanones
  申请人：Allergan, Inc.

  公开号：US05134128A1

  公开（公告）日：1992-07-28

  New 5-hydroxy-2-furanone compounds having anti-inflammatory, immunosuppressive and anti-proliferative activity and are useful in treating psoriasis and modifying calcium homeostasis.

  新的具有抗炎、免疫抑制和抗增殖活性的5-羟基-2-呋喃酮化合物对治疗牛皮癣和调节钙稳态具有用处。
• Method for producing an aromatic compound having an alkyl group with at least three carbon atoms
  申请人：TORAY INDUSTRIES, INC.

  公开号：EP0985649A2

  公开（公告）日：2000-03-15

  Aromatic compounds having an alkyl group with at least 3 carbon atoms are produced in a process comprising at least one of the following steps: (1) a step of contacting a starting material that contains an aromatic compound having a branched alkyl group with at least 3 carbon atoms, with a zeolite-containing catalyst in a liquid phase in the presence of hydrogen therein, thereby changing the position of the carbon atoms of the alkyl group bonding to the aromatic ring of the compound; (2) a step of contacting a starting material that contains an aromatic compound having a branched alkyl group with at least 3 carbon atoms, with a catalyst containing zeolite and containing rhenium and/or silver, in a liquid phase, thereby changing the position of the carbon atoms of the alkyl group bonding to the aromatic ring of the compound; (3) a step of contacting a halogenated aromatic compound having an alkyl group with at least 3 carbon atoms, with an acid-type catalyst, thereby isomerizing the compound; and (4) a step of treating a mixture of isomers of an aromatic compound having an alkyl group with at least 3 carbon atoms, with a zeolite adsorbent that contains at least one exchangable cation selected from alkali metals, alkaline earth metals, lead, thallium and silver, thereby separating a specific isomer from the isomer mixture through adsorption.

  具有至少 3 个碳原子烷基的芳香族化合物的生产工艺至少包括以下一个步骤： (1) 将含有至少 3 个碳原子的支链烷基的芳香族化合物的起始原料在液相中与含沸石的催化剂在氢存在的情况下接触，从而改变烷基的碳原子与化合物的芳香环键合的位置； (2) 将含有芳香族化合物的起始原料与含沸石和含铼和/或银的催化剂在液相中接触，该芳香族化合物具有至少 3 个碳原子的支链烷基，从而改变烷基碳原子与化合物芳香环键合的位置； (3) 将具有至少 3 个碳原子的烷基的卤代芳香族化合物与酸型催化剂接触，从而使该化合物异构化；以及 (4) 用沸石吸附剂处理具有至少 3 个碳原子的烷基的芳香族化合物的异构体混合物，该沸石吸附剂含有至少一种选自碱金属、碱土金属、铅、铊和银的可交换阳离子，从而通过吸附从异构体混合物中分离出特定的异构体。
• US5134128A
  申请人：——

  公开号：US5134128A

  公开（公告）日：1992-07-28
• US6462248B1
  申请人：——

  公开号：US6462248B1

  公开（公告）日：2002-10-08
• Singlet oxygen oxidation of substituted furans to 5-hydroxy-2(5H)-furanone
  作者：Gary C. M. Lee、Elizabeth T. Syage、Dale A. Harcourt、Judy M. Holmes、Michael E. Garst

  DOI：10.1021/jo00025a012

  日期：1991.12

  The conditions for the regiospecific singlet oxygen oxidation of various 2,4-disubstituted furans 9 to 4-substituted-2 (5H)-furanones 3 are developed. The presence of a C-2 substituent (e.g., trimethylsilyl, tert-butyldimethylsilyl, or tributylstannyl) in 9 is an absolute requirement for the formation of the 4-substituted-5-hydroxy-2(5H)-furanone regioisomer 3. When the C-2 substituent is triethylsilyl (TES) or TBDMS, however, apart from 3, the corresponding 5-trialkylsiloxy derivative 11 is also isolated in a significant amount. These silyl acetals are unexpectedly stable but can be hydrolyzed back to 3 on stirring with dilute acid. The formation of silyl acetals, to our knowledge, has never been reported in the singlet oxygen oxidation of (trialkylsilyl)furan. A plausible mechanism for their formation is proposed. The presence of a catalytic amount of water in the oxidation of 2-(trialkylsilyl)-4-substituted-furans not only eliminates the formation of the silyl acetals but also speeds up the rate of the oxidation process. Moreover, the oxidation can then be carried out at 0-degrees-C instead of at -78-degrees-C. Oxidation of 2-(1-hydroxyalkyl)-4-substituted-furans in the absence of a reducing agent gives little or no sign of 2,5-disubstituted-6-hydroxy-3(2H)-pyranone 23 but instead 26 selectively. Thus, the (1-hydroxy)alkyl group can be utilized as the trialkylsilyl or trialkylstannyl group in dictating the regioselectivity in the singlet oxygen oxidation of substituted furans.