1-bromo-6-chloro-2-hexyne | 61863-12-5

• 分子结构分类: 有机化合物 - 有机卤素化合物 - 有机氯化物
• 英文名称: 1-bromo-6-chloro-2-hexyne
• 英文别名: 1-Brom-6-chlor-hex-2-in；1-bromo-6-chlorohex-2-yne；6-Chlor-1-brom-hexin-(2)
• CAS: 61863-12-5
• 化学式: C₆H₈BrCl
• 分子量: 195.487
• InChiKey: LPDHEGPLKJVXPU-UHFFFAOYSA-N

物化性质

• 沸点：
  40-43 °C(Press: 0.09 Torr)
• 密度：
  1.443±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  8
• 可旋转键数：
  2
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.67
• 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-6-chloro-2-hexyne 在 Lindlar's catalyst 吡啶 、 氢气 、 三溴化磷 作用下， 以 乙醚 、 Petroleum ether 为溶剂， 生成 花生四烯酸
  参考文献：
  名称：

  Synthesis of Arachidonic Acid

  摘要：

  DOI：

  10.1021/jo01066a019
• 作为产物：
  描述：

  5-氯戊炔 在 吡啶 、 正丁基锂 、 三溴化磷 作用下， 以 乙醚 为溶剂， 反应 6.5h， 生成 1-bromo-6-chloro-2-hexyne
  参考文献：
  名称：

  Preparation of polyfunctional allenic alcohols by the regioselective addition of functionalized propargylic chromium(III) organometallics to carbonyl compounds

  摘要：

  The reaction of propargylic halides 1 (X = Cl, Br) with an aldehyde or ketone (0.67 equiv) in the presence of CrCl2 (2.0 equiv) and LiI (2 equiv, necessary if X = Cl) affords allenic alcohols 3 with excellent regioselectivities (3-6% of the regioisomeric acetylenic alcohol 4 is formed) and in good yields (68-90%). Interestingly, this method allows the generation of highly functionalized intermediate propargylic chromium organometallics contained an ester, cyano, or chloride functionality. The alpha-alkyl-substituted propargylic bromide 10 reacts with benzaldehyde yielding the acetylenic alcohol 11 as a diastereomeric mixture of only one regioisomer (90% yield).

  DOI：

  10.1021/jo00041a006

文献信息

• Preparation of Organoaluminum Reagents from Propargylic Bromides and Aluminum Activated by PbCl2 and Their Regio- and Diastereoselective Addition to Carbonyl Derivatives
  作者：Li-Na Guo、Hongjun Gao、Peter Mayer、Paul Knochel

  DOI：10.1002/chem.201000523

  日期：2010.8.23

  propargylic and allenic aluminum reagents have been easily prepared by a direct insertion of aluminum into propargylic bromides in the presence of PbCl2 (1 mol %). These organoaluminum reagents react with carbonyl compounds to afford the corresponding allenic alcohols or homopropargylic alcohols in good to excellent yields with high regio‐ and diastereoselectivity.

  通过在PbCl 2（1 mol％）存在下将铝直接插入到炔丙基溴中，可以很容易地制备出各种炔丙基和烯丙基铝试剂。这些有机铝试剂可与羰基化合物反应，以高至极高的选择性和高非对映选择性提供相应的烯丙醇或均丙炔醇。
• Derivatives of 4-acetyl-3-hydroxy-2-alkyl-phenoxycarboxylic acids
  申请人：Hoffmann-La Roche Inc.

  公开号：US04672066A1

  公开（公告）日：1987-06-09

  The invention relates to compounds of the formula ##STR1## wherein R is hydrogen or lower alkyl, Y is alkylene; Z is alkylene, ##STR2## the asterisk herein denotes bonding to the substituted acetophenone; R.sub.2 is hydrogen or lower alkoxy; and n is an integer of 1 to 3; A is ##STR3## and HET is a 5-or 6- membered nitrogen containing heterocyclic group, and their acid addition salts. The compounds of formula I of the invention are useful for the treatment of allergic conditions, such as, asthma and cardiovascular diseases, such as, angina and arrhythmias.

  该发明涉及以下式的化合物：##STR1## 其中R为氢或较低的烷基，Y为亚烷基；Z为亚烷基，##STR2## 这里的星号表示与取代的乙酰苯酮的结合；R.sub.2为氢或较低的烷氧基；n为1至3的整数；A为##STR3## HET为含氮的5-或6-成员杂环基团，以及它们的酸盐。该发明的式I化合物对于治疗过敏症状，如哮喘和心血管疾病，如心绞痛和心律失常，具有用处。
• Substituted 4-acetyl-3-hydroxyphenoxy alkanoic acids
  申请人：Hoffmann-La Roche Inc.

  公开号：US04628115A1

  公开（公告）日：1986-12-09

  The invention relates to compounds of the formula ##STR1## wherein R is hydrogen or lower alkyl, Z is alkylene of 1 to 10 carbon atoms, --(C*H.sub.2).sub.3 --C.tbd.C--, --C*H.sub.2 --C.tbd.C--(CH.sub.2).sub.3 --, and --(CH.sub.2).sub.2 O].sub.n (CH.sub.2).sub.2 -- wherein n is an integer of 1 to 3, the carbon atom marked with an asterisk is linked to the phenoxy moiety, and salts thereof with pharmaceutically acceptable bases. The compounds of formula I are antagonists of slow reacting substance of anaphylaxis (SRS-A; leukotrienes C.sub.4, D.sub.4 and E.sub.4), which renders them useful as agents for the treatment of allergic conditions.

  该发明涉及以下式的化合物##STR1##其中R是氢或较低的烷基，Z是1至10个碳原子的烷基，--(C*H.sub.2).sub.3 --C.tbd.C--, --C*H.sub.2 --C.tbd.C--(CH.sub.2).sub.3 --，以及--(CH.sub.2).sub.2 O].sub.n (CH.sub.2).sub.2 --其中n是1至3的整数，带有星号标记的碳原子与苯氧基团连接，并且其与药学上可接受的碱盐。式I的化合物是过敏反应缓慢反应物（SRS-A;白三烯C.sub.4，D.sub.4和E.sub.4）的拮抗剂，使它们在过敏症状治疗剂方面有用。
• Unexpected Electrophilic Rearrangements of Amides: A Stereoselective Entry to Challenging Substituted Lactones
  作者：Claire Madelaine、Viviana Valerio、Nuno Maulide

  DOI：10.1002/anie.200906416

  日期：2010.2.22

  Surprise, surprise! An unexpected skeletal rearrangement was developed into a chemo‐ and stereoselective synthesis of α‐allyl and allenyl lactones with challenging substitution patterns (see scheme; EWG=electron‐withdrawing group). The generality, unique features, and synthetic potential of this reaction were probed and a mechanism was proposed.

  惊喜，惊喜！意外的骨骼重排被发展为具有挑战性取代模式的α-烯丙基和烯丙基内酯的化学和立体选择性合成（请参阅方案； EWG =吸电子基团）。探讨了该反应的一般性，独特性和合成潜力，并提出了机理。
• The Renaissance of an Old Problem: Highly Regioselective Carboxylation of 2-Alkynyl Bromides with Carbon Dioxide
  作者：Bukeyan Miao、Gen Li、Shengming Ma

  DOI：10.1002/chem.201503494

  日期：2015.11.23

  A steric effect‐controlled, zinc‐mediated carboxylation of different 2‐alkynyl bromides under an atmospheric pressure of CO2 has been developed by careful tuning of different reaction parameters, including the metal, solvent, temperature, and additive. 2‐Substituted 2,3‐allenoic acids were afforded from primary 2‐alkynyl bromides, whereas the carboxylation of secondary 2‐alkynyl bromides yielded 3‐alkynoic

  通过仔细调节不同的反应参数（包括金属，溶剂，温度和添加剂），已开发出在CO 2大气压下，空间效应控制的锌介导的不同2-炔基溴化物的羧化反应。伯2-炔基溴化物可提供2-取代的2,3-烯丙酸，而仲2-炔基溴化物的羧化则可得到3-链炔酸，且得率较高。已经提出了观察到的区域选择性的基本原理。