2-Methyl-4-methylidenehex-5-en-3-ol | 59163-78-9

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2-Methyl-4-methylidenehex-5-en-3-ol
• 英文别名: 2-methyl-4-methylene-5-hexen-3-ol；3-methylene-5-methyl-1-hexen-4-ol；2-methyl-4-methylene-hex-5-en-3-ol
• CAS: 59163-78-9
• 化学式: C₈H₁₄O
• 分子量: 126.199
• InChiKey: IFQLDYYIYNEDDK-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  9
• 可旋转键数：
  3
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  20.2
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  2-Methyl-4-methylidenehex-5-en-3-ol 在 盐酸 、 manganese(IV) oxide 、 三氟化硼乙醚 、 三乙胺 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 6.0h， 生成 4-Acetylcyclohex-1-enyl isopropyl ketone
  参考文献：
  名称：

  Thermal and Catalyzed Diels-Alder Reactions with Chiral 2-Substituted-1,3-dienes: Conformational Models for Diastereofacial Selectivity

  摘要：

  The thermal or BF3-catalyzed Diels-Alder reactions of chiral 2-substituted-1,3-dienes bearing a hydroxy or a protected hydroxy group at the allylic position with various dienophiles have been studied in order to determine the regio- and stereoselective control elements. Good regio- and facial selectivities were ob;served in thermal reaction of dienes bearing a free hydroxy group. The stereoselectivity was reversed and strongly lowered when the hydroxy soup was protected as an ether. However the regio- as well as the stereoselectivity of the cycloaddition of these diene ethers with alpha,beta-unsaturated aldehydes or ketones are remarkably enhanced by the addition of a Lewis acid since in a few cases a unique isomer was formed. These experimental results have been rationalized and could be explained by conformational preferences of the dienes in the transition state. In particular, the reversal of facial selectivity for dienes having a free hydroxy group has been attributed to a hydrogen bonding interaction between the diene and the dienophile.

  DOI：

  10.1021/jo00094a029
• 作为产物：
  描述：

  4-bromo-buta-1,2-diene 生成 2-Methyl-4-methylidenehex-5-en-3-ol
  参考文献：
  名称：

  PORNET J.; RANDRIANOELINA B.; MIGINIAC L., J. ORGANOMETAL. CHEM., 1979, 174, NO 1, 15-26

  摘要：

  DOI：

文献信息

• Stannyldienes, new tools for organic synthesis. preparatiom and reactivity
  作者：Cristina Nativi、Maurizio Taddei、André Mann

  DOI：10.1016/0040-4020(89)80022-5

  日期：1989.1

  for a regiocontrolled transfer of the dienic structure by : a)tin-lithium exchange and further reaction with aldehydes to give conjugated dienic alcohols; b)coupling with acyl chlorides in the presence of palladium catalysts to give conjugated dienic ketones; c) AlCl3, promoted reaction with acyl chlorides to give allenic ketones.

  三丁基锡烷基-1,3-二烯可以被认为是共轭二烯阴离子的合成等价物。据报道从炔丙基三甲基戊烷开始制备不同取代的2-和3-三烷基锡烷基-1，3-二烯。可以通过（三甲基甲硅烷基）炔丙基醇的加氢甲锡烷基化或（三甲基甲硅烷基）炔丙基酮的甲锡醇杯化来控制二苯乙烯骨架上的苯乙烯基部分的位置。将如此获得的苯乙烯亚胺进行二烯Alder反应，并通过C-Sn将相应的环加合物官能化。键。甲炔还适合通过以下方法进行二烯结构的区域控制转移：a）锡-锂交换，并与醛进一步反应，生成共轭二烯醇；b）在钯催化剂的存在下与酰氯偶联，得到共轭二烯酮；c）AlCl 3，促进与酰氯的反应，生成烯丙基酮。
• Diastereofacial selectivity in Diels-Alder reactions of chiral 2-substituted-1,3-dienes.
  作者：Robert Bloch、Nathalie Chaptal-Gradoz

  DOI：10.1016/s0040-4039(00)60028-x

  日期：1992.10

  described. Thermal Diels-Alder reactions between these dienols or their ethers 3 and various dienophiles give rise with fair to good regio- and diastereoselectivity to monocyclic “para” adducts. In contrast a total regioselectivity and an excellent π-facial selectivity is observed when the Diels-Alder cycloadditions of the dienic ethers 3 are conducted in the presence of a Lewis acid.

  从氯丁二烯开始，描述了烷基和芳基（1，3-丁二烯-2-基）甲醇1的改进的合成。这些二烯醇或它们的醚3与各种亲二烯体之间的热Diels-Alder反应产生了对单环“对”加合物的公平至良好的区域和非对映选择性。相反，当在路易斯酸的存在下进行二烯醚3的狄尔斯-阿尔德环加成反应时，观察到总区域选择性和优异的π表面选择性。
• A Four-Carbon Unit Reagent for the Regiospecific Synthesis of 2-Alkyl-Substituted 1,3-Butadienes
  作者：Alan R. Katritzky、Larisa Serdyuk、Dorin Toader、Xiaojing Wang

  DOI：10.1021/jo9818881

  日期：1999.3.1

  2-Alkyl-substituted butadienes are synthesized starting from a masked butadiene reagent, which allows the regiospecific synthesis of 2-alkylbutadienes by lithiation and subsequent reaction with alkyl halides or aliphatic aldehydes. The regioselectivity of the reaction with allylic halides and aliphatic and aromatic aldehydes is studied.

  从被掩盖的丁二烯试剂开始合成2-烷基取代的丁二烯，该掩蔽的丁二烯试剂允许通过锂化并随后与烷基卤化物或脂族醛反应而进行区域特异性合成2-烷基丁二烯。研究了与烯丙基卤化物以及脂族和芳族醛的反应的区域选择性。
• Racemic and diastereoselective synthesis of alkyl(1,3-butadien-2-yl)methanols via a novel homoallenylboration of aldehydes with diisopropyl 2,3-butadien-1-ylboronate
  作者：Raman Soundararajan、Guisheng Li、Herbert C. Brown

  DOI：10.1016/0040-4039(95)00311-y

  日期：1995.4

  3-butadien-1-ylboronate has been prepared by a simple method and its utility as a novel homoallenylborating reagent has been demonstrated with a series of aldehydes. Also, a high diastereoselectivity of this reagent in its reaction with an α-chiral aldehyde has been established.

  已经通过简单的方法制备了2，3-丁二烯-1-基硼酸二异丙酯，并且已经证明了其作为新型的均烯丙基硼酸酯化试剂的用途，并带有一系列的醛。而且，已经确定了该试剂在与α-手性醛的反应中的高非对映选择性。
• Organometalliques (M = Mg, Zn, Al) derivant de bromures α-alleniques
  作者：J. Pornet、B. Randrianoelina、L. Miginiac

  DOI：10.1016/s0022-328x(00)96158-8

  日期：1979.7