B-hexynyl-9-borabicyclo[3.3.1]nonane | 62459-81-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 金属杂环化合物
• 英文名称: B-hexynyl-9-borabicyclo[3.3.1]nonane
• 英文别名: 1-hexyne；9-hex-1-ynyl-9-bora-bicyclo[3.3.1]nonane；B-1-hexynyl-9-BBN；9-(Hex-1-yn-1-yl)-9-borabicyclo[3.3.1]nonane；9-hex-1-ynyl-9-borabicyclo[3.3.1]nonane
• CAS: 62459-81-8
• 化学式: C₁₄H₂₃B
• 分子量: 202.148
• InChiKey: CPLUOXGCKOTFKQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.32
• 重原子数：
  15
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.86
• 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：

  B-hexynyl-9-borabicyclo[3.3.1]nonane 在 bis-triphenylphosphine-palladium(II) chloride 、 copper(l) iodide 、 溴 、 正丁胺 作用下， 以 四氢呋喃 为溶剂， 反应 6.0h， 生成
  参考文献：
  名称：

  顺式烯二炔的金催化环化：深入了解金-芳炔相互作用的性质

  摘要：

  金亚宁？金芳炔配合物被推断为双金催化的顺式烯二炔环化中的过渡态（参见方案；DCE=1,2-二氯乙烷）。它们被更好地描述为邻-金苯基阳离子，它与弱亲核试剂反应并进行分子内插入 C(sp 3 )  H 键。使用这种方法很容易制备茚满、稠合杂芳烃和苯酚衍生物。

  DOI：

  10.1002/anie.201301057
• 作为产物：
  描述：

  9-硼双环[3.3.1]壬烷 以 乙醚 为溶剂， -78.0~150.0 ℃ 、13.33 Pa 条件下， 反应 12.75h， 生成 B-hexynyl-9-borabicyclo[3.3.1]nonane
  参考文献：
  名称：

  A versatile synthesis of 9-BBN derivatives from organometallic reagents and 9-(triisopropylsilyl)thio-9-borabicyclo[3.3.1]nonane

  摘要：

  Representative B-substituted-9-BBNs (3) are efficiently prepared from either organolithium or Grignard reagents through their addition to (TIPS)S-9-BBN (1) which is readily available from TIPSSH and 9-BBN-H. The thermally induced collapse of the intermediate 'ate' complexes (2) produces 3 which is easily isolated in good yield and high purity. (C) 2000 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4039(00)00450-0

文献信息

• Generation and Tandem Reactions of 1-Alkenyl-1,1-Heterobimetallics:  Practical and Versatile Reagents for Organic Synthesis
  作者：Hongmei Li、Patrick J. Carroll、Patrick J. Walsh

  DOI：10.1021/ja077664u

  日期：2008.3.1

  A practical and straightforward method for generation of versatile 1-alkenyl-1,1-heterobimetallic intermediates and their application to construction of functionalized building blocks are disclosed. Beginning with readily available air-stable 1-alkynyl-1-boronate esters, hydroboration with dicyclohexylborane generates 1-alkenyl-1,1-diboro species. In situ transmetallation with dialkylzinc reagents

  公开了一种用于生成通用 1-烯基-1,1-杂双金属中间体的实用且直接的方法及其在构建功能化构件中的应用。从容易获得的空气稳定的 1-炔基-1-硼酸酯开始，用二环己基硼烷进行硼氢化反应生成 1-烯基-1,1-二硼物种。使用二烷基锌试剂进行原位金属转移，得到 1-烯基-1,1- 杂双金属中间体。用醛直接处理，然后进行后处理，可以以 70-95% 的产率分离 B(pin)-取代的烯丙醇。B(pin)-取代的烯丙醇与 NBS 反应，通过半频哪醇型重排以 51-77% 的产率提供 (E)-α，β-不饱和醛。1-链烯基-1的原位处理，具有醛的 1-异双金属中间体，然后进行 TBHP 氧化，可以制备 α-羟基酮。在优化条件下，将 1-烯基-1,1-杂双金属中间体添加到各种受保护的 α-和 β-羟基醛中，可以很好地控制非对映选择性，以提供差异保护的二羟基酮。1-烯基-1,1-杂双金属中间体也已用于串联醛加成/Suzuki
• Asymmetric Sulfur Ylide Reactions with Boranes:  Scope and Limitations, Mechanism and Understanding
  作者：Guang Y. Fang、Olov A. Wallner、Nadia Di Blasio、Xavier Ginesta、Jeremy N. Harvey、Varinder K. Aggarwal

  DOI：10.1021/ja074110i

  日期：2007.11.28

  The reactions of aryl-stabilized sulfur ylides with organoboranes has been studied under a variety of conditions. At 5 or -78 degrees C, the reaction with Et3B gave a mixture of the first and second homologation products, but at -100 degrees C, only the first homologation product was obtained even with just 1.1 equiv of Et3B. Under these optimized conditions, the chiral sulfur ylides (derived from camphor sulfonic acid) with different aryl groups were reacted with Et3B to give the corresponding alcohols (95-98% yield, 96-98% ee) and amines (74-77% yield, > 98% ee). The origin of the high enantioselectivity is discussed. The use of nonsymmetrical 9-BBN derivatives was also explored. It was found that whereas primary alkyl substituents gave mixtures of products derived from competing migration of the boron substituent and the boracycle, all other groups resulted in either exclusive migration of the boron substituent (Ph, hexenyl, i-Pr) or exclusive migration of the boracycle (hexynyl, cyclopropyl). The factors responsible for the outcome of the reactions involving a hindered (i-Pr) and an unhindered (propynyl) substituent were studied by DFT calculations. This revealed that, in the case of an unhindered substituent, the conformation of the ate complex is the dominant factor whereas, in the case of a hindered substituent, the barriers to interconversion between the conformers of the ate complex and subsequent migration control the outcome of the reaction.
• Organoboranes. 38. A facile and highly efficient addition of B-1-alkynyl-9-borabicyclo[3.3.1]nonanes to aldehydes and ketones: an exceptionally chemoselective synthesis of propargylic alcohols
  作者：Herbert C. Brown、Gary A. Molander、Shankar M. Singh、Uday S. Racherla

  DOI：10.1021/jo00210a003

  日期：1985.5
• WHITELEY, C. G., S. AFR. J. CHEM., 1982, 35, N 1, 9-12
  作者：WHITELEY, C. G.

  DOI：——

  日期：——
• BROWN, H. C.;MOLANDER, G. A.;SINGH, SHANKAR, M.;RACHERLA, U. S., J. ORG. CHEM., 1985, 50, N 10, 1577-1582
  作者：BROWN, H. C.、MOLANDER, G. A.、SINGH, SHANKAR, M.、RACHERLA, U. S.

  DOI：——

  日期：——