2-[(diethylamino)dimethylsilyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane | 929887-22-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 溴苄基硼酸频哪醇酯
• 英文名称: 2-[(diethylamino)dimethylsilyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
• 英文别名: (diethylaminodimethylsilyl)pinacolborane；N,N-Diethyl-1,1-dimethyl-1-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)silanamine；N-[dimethyl-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)silyl]-N-ethylethanamine
• CAS: 929887-22-9
• 化学式: C₁₂H₂₈BNO₂Si
• 分子量: 257.256
• InChiKey: BDTGBVJIRHSBDV-UHFFFAOYSA-N

物化性质

• 沸点：
  244.2±23.0 °C(Predicted)
• 密度：
  0.90±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  17
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  21.7
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  2-[(diethylamino)dimethylsilyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 在 bis(dibenzylideneacetone)-palladium⁽⁰⁾ 作用下， 以 氘代苯 为溶剂， 生成 N,N-diethyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-amine
  参考文献：
  名称：

  钯催化的亚甲硅烷-1,3-二烯 [4 + 1] 环加成反应，使用（氨基甲硅烷基）硼酸酯作为亚甲硅烷的合成等价物

  摘要：

  硅原子上带有二烷基氨基的甲硅烷基硼酸酯在钯催化剂的存在下与 1,3-二烯反应，通过有效地从甲硅烷基硼酸酯转移甲硅烷基，以高产率得到硅杂环戊 3-烯（即 2,5-二氢硅酮） 1,3-二烯的酯。[4 + 1] 环加成适用于母体 1,3-丁二烯和各种具有甲硅烷氧基、氰基和酯基团的单、二和三取代的 1,3-二烯。在与 5,7-十二二烯的任一立体异构体的反应中发生立体有择的环形成：(E,E)-二烯产生顺式产物，而在异构体 (E,Z) 的反应中观察到反式产物的选择性形成)-二烯。[4 + 1] 环加成，然后用 DDQ 或氯苯醌脱氢得到 2,4- 和 2,5- 二芳基甲硅烷。

  DOI：

  10.1021/ja907170p
• 作为产物：
  描述：

  (chlorodimethylsilyl)pinacolborane 、 二乙胺 在 三乙胺 作用下， 以 正己烷 为溶剂， 以90%的产率得到2-[(diethylamino)dimethylsilyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
  参考文献：
  名称：

  Synthesis of Silylboronic Esters Functionalized on Silicon

  摘要：

  New silylpinacolboranes bearing chloro, fluoro, alkoxy, and dialkylamino groups on silicon were synthesized in high yields via derivatization of [(diethylamino)diphenylsilyl]pinacolborane, which was prepared by reaction of [(diethylamino)diphenylsilyl]lithium with (isopropoxy)pinacolborane, and (chlorodimethylsilyl)pinacolborane, prepared by reaction of (dimethylphenylsilyl)pinacolborane with hydrogen chloride in the presence of a catalytic amount of aluminum chloride.

  DOI：

  10.1021/om0609867

文献信息

• Catalytic Generation of Rhodium Silylenoid for Alkene–Alkyne–Silylene [2 + 2 + 1] Cycloaddition
  作者：Toshimichi Ohmura、Ikuo Sasaki、Michinori Suginome

  DOI：10.1021/acs.orglett.9b00326

  日期：2019.3.15

  2 + 1] cycloaddition takes place in the rhodium-catalyzed reaction of 1,6-enynes with borylsilanes bearing an alkoxy group on the silicon atoms, which react as synthetic equivalents of silylene. The reaction proceeds efficiently in 1,2-dichloroethane at 80–110 °C in the presence of a rhodium catalyst bearing bis(diphenylphosphino)methane (DPPM) as a ligand to afford 1-silacyclopent-2-enes in good to

  烯烃-炔烃-亚甲基[2 + 2 +1]的环加成反应是在铑催化的1,6-炔烃与在硅原子上带有烷氧基的硼烷基硅烷的反应中进行的，这些硅烷作为合成的甲硅烷基等效物进行反应。在载有双（二苯基膦基）甲烷（DPPM）作为配体的铑催化剂存在下，反应在80-110°C的1,2-二氯乙烷中有效进行，从而以高收率或高收率得到1-silacyclopent-2-enes。
• Construction of Silicon-Containing Seven-Membered Rings by Catalytic [4 + 2 + 1] Cycloaddition through Rhodium Silylenoid
  作者：Ikuo Sasaki、Toshimichi Ohmura、Michinori Suginome

  DOI：10.1021/acs.orglett.0c00690

  日期：2020.4.17

  involving 1,3-diene, alkyne, and silylene to afford silicon-containing seven-membered rings was established. In the presence of a rhodium catalyst bearing bis(diphenylphosphino)methane (DPPM), nona-1,3-dien-8-yne derivatives reacted efficiently at 80–110 °C with boryl(isopropoxy)silane or boryl(diethyamino)silane, which reacts as the synthetic equivalent of silylene, to afford 1-silacyclohepta-2,5-dienes (2

  建立了铑催化的[4 + 2 + 1]环加成反应，该反应涉及1,3-二烯，炔烃和亚甲硅烷基，以提供含硅的七元环。在带有双（二苯基膦基）甲烷（DPPM）的铑催化剂的存在下，壬基1,3-三烯-8-炔衍生物在80–110°C下与硼基（异丙氧基）硅烷或硼基（二乙氨基）硅烷有效反应，其作为亚甲硅烷基的合成当量反应，得到1-silacyclohepta-2，5-二烯（2，5-二氢-1 H-西勒平）。七元非共轭二烯的区域发散性和化学和立体选择性官能化是通过Cs 2 CO 3或铱催化剂介导的硼氢化作用实现的。
• Synthesis of Disilanes, Dihydrosiloles, and 1,4‐Disilacyclohexa‐2,5‐dienes by Transition‐Metal‐Free Transfer of Diphenylsilylene and Dimethylsilylene from Silylboronic Esters
  作者：Ikuo Sasaki、Asahi Maebashi、Jiaying Li、Toshimichi Ohmura、Michinori Suginome

  DOI：10.1002/ejoc.202101573

  日期：2022.3.29

  Transfer of diphenylsilylene (Ph2Si:) and dimethylsilylene (Me2Si:) from silylboronic esters takes place at 110–135 °C under transition-metal-free conditions. The reaction with alkoxysilanes, 1,3-dienes, and an alkyne affords alkoxydisilanes, dihydrosiloles, and 1,4-disilacyclohexa-2,5-dienes, respectively, in good to high yields.

  在无过渡金属条件下，在 110–135 °C 下，从甲硅烷基硼酸酯中转移二苯基甲硅烷基 (Ph 2 Si:) 和二甲基甲硅烷基 (Me 2 Si:)。与烷氧基硅烷、1,3-二烯和炔烃的反应分别以良好至高产率提供烷氧基二硅烷、二氢硅烷和 1,4-二硅环六-2,5-二烯。
• Palladium-Catalyzed Silylene-1,3-Diene [4 + 1] Cycloaddition with Use of (Aminosilyl)boronic Esters as Synthetic Equivalents of Silylene
  作者：Toshimichi Ohmura、Kohei Masuda、Ichiro Takase、Michinori Suginome

  DOI：10.1021/ja907170p

  日期：2009.11.25

  3-dienes having silyloxy, cyano, and ester groups. Stereospecific ring formation took place in the reaction with either stereoisomer of 5,7-dodecadiene: the (E,E)-diene gave the cis product, whereas selective formation of the trans product was observed in the reaction of the isomeric (E,Z)-diene. The [4 + 1] cycloaddition followed by dehydrogenation with DDQ or chloranil afforded 2,4- and 2,5-diarylsiloles

  硅原子上带有二烷基氨基的甲硅烷基硼酸酯在钯催化剂的存在下与 1,3-二烯反应，通过有效地从甲硅烷基硼酸酯转移甲硅烷基，以高产率得到硅杂环戊 3-烯（即 2,5-二氢硅酮） 1,3-二烯的酯。[4 + 1] 环加成适用于母体 1,3-丁二烯和各种具有甲硅烷氧基、氰基和酯基团的单、二和三取代的 1,3-二烯。在与 5,7-十二二烯的任一立体异构体的反应中发生立体有择的环形成：(E,E)-二烯产生顺式产物，而在异构体 (E,Z) 的反应中观察到反式产物的选择性形成)-二烯。[4 + 1] 环加成，然后用 DDQ 或氯苯醌脱氢得到 2,4- 和 2,5- 二芳基甲硅烷。
• Silylboranes Bearing Dialkylamino Groups on Silicon as Silylene Equivalents:  Palladium-Catalyzed Regioselective Synthesis of 2,4-Disubstituted Siloles
  作者：Toshimichi Ohmura、Kohei Masuda、Michinori Suginome

  DOI：10.1021/ja073896h

  日期：2008.2.6

  Silylpinacolboranes bearing dialkylamino groups on the silicon atom several as synthetic equivalents of silylene in palladium-catalyzed reactions with terminal alkynes, leading to the formation of 2, 4-disubstituted siloles in high yield. It was found that the amino group on the silicon atom was critically important for the reaction; no silole products were found in reactions using silylpinacolboranes carrying aryl, chloro, or alkoxy groups on the silicon atoms. Site-selective bromination of 1,1-dimethyl-2,4-diphenylsilole followed by Migita-Kasugi-Stille coupling with (arylalkynyl)tributylstannanes gave novel Pi-conjugated siloles with good total yields.