ethyl diisopropylcarbamate | 20652-39-5

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: ethyl diisopropylcarbamate
• 英文别名: ethyl N,N-diisopropylcarbamate；N,N-Diisopropyl-carbaminsaeure-ethylester；ethyl N,N-di(propan-2-yl)carbamate
• CAS: 20652-39-5
• 化学式: C₉H₁₉NO₂
• 分子量: 173.255
• InChiKey: LRJHYQLNLMGEPR-UHFFFAOYSA-N

物化性质

• 沸点：
  247.42°C (estimate)
• 密度：
  0.9221 (estimate)

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  12
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.89
• 拓扑面积：
  29.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  ethyl diisopropylcarbamate 在 三氯氧磷 作用下， 以 乙腈 为溶剂， 反应 20.0h， 以48.1%的产率得到二异丙基甲胺酰氯
  参考文献：
  名称：

  Hoshino, Osamu; Saito, Keiji; Ishizaki, Miyuki, Synthetic Communications, 1987, vol. 17, # 16, p. 1887 - 1892

  摘要：

  DOI：
• 作为产物：
  描述：

  氯甲酸乙酯 、 二异丙胺 在 吡啶 作用下， 以 二氯甲烷 为溶剂， 生成 ethyl diisopropylcarbamate
  参考文献：
  名称：

  Low-energy, low-temperature mass spectra. 10—urethanes

  摘要：

  AbstractThe 12.1 eV, 75°C electron impact mass spectra of 24 urethanes, RNHCO2C2H5 [R  H, C2H2n +1 (n = 1‐8), CH2CHCH2, Ph, PhCH2 and PhCH2CH2], and seven symmetrically disubstituted urethanes R2NCO2C2H5 (R  Cn H2n + 1 (n = 1−4)) are reported and discussed. All 31 spectra show appreciable molecular ion peaks. For n −Cn H2n +1 NHCO2C2H5, M+ ˙ usually is the most abundant ion in the spectrum. A peak at m/z 102 of comparable intensity also is present; this corresponds to formal cleavage of the bond connecting the α‐ and β‐carbon atoms in the N‐alkyl group, though it is unlikely that the daughter ion has the structure [CH2NHCO2C2H5]+. In the RNHCO2C2H5 series, branching at the α‐carbon atom enhances the relative abundance of the ion arising by notional α‐cleavage at the expense of that of M+ ˙. Formal cleavage of the bond between β‐ and γ‐carbon atoms occurs to some extent for [RNHCO2C2H5]+˙ ions; this reaction provides information on the degree of branching at the β‐carbon, especially if metastable molecular ions are considered. The higher n‐CnH2n +1NHCO2C2H5 (n = 5−8) urethanes exhibit two other significant ions in their mass spectra. First, there is a peak at [M  C2H5]+. Secondly, a peak is present at m/z 90; the most plausible structure for this ion is [H2N(HO)COC2H5]+, arising by double hydrogen transfer from the alkyl group and expulsion of a [CnH2n −1]˙ radical. Ions originating from secondary decomposition of the primary ionic species are generally of only very low abundance in these spectra.

  DOI：

  10.1002/oms.1210240210

文献信息

• Stereocontrolled Synthesis of Adjacent Acyclic Quaternary-Tertiary Motifs: Application to a Concise Total Synthesis of (−)-Filiformin
  作者：Daniel J. Blair、Catherine J. Fletcher、Katherine M. P. Wheelhouse、Varinder K. Aggarwal

  DOI：10.1002/anie.201400944

  日期：2014.5.26

  developed for the synthesis of acyclic quaternary‐tertiary motifs with full control of relative and absolute stereochemistry, thus leading to all four possible isomers of a stereodiad. A novel intramolecular Zweifel‐type olefination enabled acyclic stereocontrol to be transformed into cyclic stereocontrol. These key steps have been applied to the shortest enantioselective synthesis of (−)‐filiformin

  已经开发了锂化/硼氢化方法学，用于合成无环四级-三级基序，并且可以完全控制相对和绝对立体化学，因此可以生成立体二价体的所有四种可能的异构体。新型的分子内Zweifel型烯化反应使无环立体控制转变为环立体控制。迄今为止，这些关键步骤已应用于具有完全立体控制的最短对映选择性合成（-）-filiformin（9个步骤）。
• Improved method for the conversion of pinacolboronic esters into trifluoroborate salts: facile synthesis of chiral secondary and tertiary trifluoroborates
  作者：Viktor Bagutski、Abel Ros、Varinder K. Aggarwal

  DOI：10.1016/j.tet.2009.10.002

  日期：2009.11

  A general method for the preparation of virtually any potassium trifluoroborate salt from the corresponding pinacolboronic ester is reported. Thus, conditions for an azeotropic removal of pinacol from the reaction mixture were found to afford the desired potassium trifluoroborates of sufficient purity (>95%) in nearly quantitative yields irrespective of the nature of the product. The utility of this

  报道了从相应的频哪醇硼酸酯制备几乎任何三氟硼酸钾盐的通用方法。因此，发现从反应混合物中共沸除去频哪醇的条件以几乎定量的产率提供了具有足够纯度（＞ 95％）的所需三氟硼酸钾，而与产物的性质无关。通过制备大量对映体富集的仲和叔三氟硼酸钾说明了该方法的实用性。
• Stereocontrolled Synthesis of 1,5-Stereogenic Centers through Three-Carbon Homologation of Boronic Esters
  作者：Phillip J. Unsworth、Daniele Leonori、Varinder K. Aggarwal

  DOI：10.1002/anie.201405700

  日期：2014.9.8

  Allylic pinacol boronic esters are stable toward 1,3‐borotropic rearrangement. We developed a PdII‐mediated isomerization process that gives di‐ or trisubstituted allylic boronic esters with high E selectivity. The combination of this method with lithiation–borylation enables the synthesis of carbon chains that bear 1,5‐stereogenic centers. The utility of this method has been demonstrated in a formal

  烯丙基频哪醇硼酸酯对1,3-硼异向重排是稳定的。我们开发了一种由Pd II介导的异构化工艺，该工艺可产生具有高E 选择性的二或三取代的烯丙基硼酸酯。这种方法与锂化-硼化的结合可以合成具有1,5-立体异构中心的碳链。该方法的效用已在（+）-茉莉素的正式合成中得到了证明。
• Development of Enantiospecific Coupling of Secondary and Tertiary Boronic Esters with Aromatic Compounds
  作者：Marcin Odachowski、Amadeu Bonet、Stephanie Essafi、Philip Conti-Ramsden、Jeremy N. Harvey、Daniele Leonori、Varinder K. Aggarwal

  DOI：10.1021/jacs.6b03963

  日期：2016.8.3

  functional groups (esters, azides, nitriles, alcohols, and ethers). The reaction also worked well with other electron-rich heteroaromatics and 6-membered ring aromatics provided they had donor groups in the meta position. Conditions were also found under which the B(pin)- moiety could be retained in the product, ortho to the boron substituent. This protocol, which created a new C(sp2)–C(sp3) and an adjacent

  仲硼酸酯与 sp2 亲电试剂的立体有择交叉偶联（Suzuki-Miyaura 反应）是合成中长期存在的问题，但在使用钯催化的特定情况下已经取得了进展。然而，目前无法实现与叔硼酸酯的相关偶联。为了解决这一普遍问题，我们专注于利用芳基锂和硼酸酯之间形成的硼酸盐络合物的反应性的替代方法。我们推断，随后添加氧化剂或亲电子试剂会分别从芳环中去除电子或以 Friedel-Crafts 型方式反应，产生阳离子物质，这将引发硼取代基的 1,2-迁移，创建新的 C-C 键。消除（在前一种情况下，在进一步氧化之前）将导致重新芳构化，从而立体特异性地产生偶联产物。最初的工作是用 2-furyllithium 检查的。尽管测试的氧化剂不成功，但亲电试剂，特别是 NBS，使得偶联反应能够以良好的收率与范围广泛的仲和叔硼酸酯发生偶联反应，具有不同的空间需求和官能团（酯、叠氮化物、腈、醇和醚） ）。该反应也适用于其他富电子杂芳烃和
• Enantiospecific Synthesis of <i>ortho</i> ‐Substituted 1,1‐Diarylalkanes by a 1,2‐Metalate Rearrangement/ <i>anti</i> ‐S _<i>N</i> 2′ Elimination/Rearomatizing Allylic Suzuki–Miyaura Reaction Sequence
  作者：Belén Rubial、Beatrice S. L. Collins、Raphael Bigler、Stefan Aichhorn、Adam Noble、Varinder K. Aggarwal

  DOI：10.1002/anie.201811343

  日期：2019.1.28

  The one‐pot sequential coupling of benzylamines, boronic esters, and aryl iodides has been investigated. In the presence of an N‐activator, the boronate complex formed from an ortho‐lithiated benzylamine and a boronic ester undergoes stereospecific 1,2‐metalate rearrangement/anti‐SN2′ elimination to form a dearomatized tertiary boronic ester. Treatment with an aryl iodide under palladium catalysis

  研究了苄胺、硼酸酯和芳基碘化物的一锅顺序偶联。在 N-活化剂存在下，由邻位锂化苄胺和硼酸酯形成的硼酸酯络合物经历立体定向 1,2-金属化物重排/抗 S N 2' 消除，形成脱芳构化叔硼酸酯。在钯催化下用芳基碘化物处理导致 γ-选择性烯丙基 Suzuki-Miyaura 交叉偶联重新芳构化，生成 1,1-二芳基烷烃。当使用对映体富集的 α-取代苄胺时，会形成具有高立体特异性的相应 1,1-二芳基烷烃。