tert-butyl (R)-2-isothiocyanato-1-phenylethylcarbamate | 1172596-82-5

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: tert-butyl (R)-2-isothiocyanato-1-phenylethylcarbamate
• 英文别名: Boc-D-Phg-ψ[CH2NCS]；tert-butyl N-[(1R)-2-isothiocyanato-1-phenylethyl]carbamate
• CAS: 1172596-82-5
• 化学式: C₁₄H₁₈N₂O₂S
• 分子量: 278.375
• InChiKey: VDSGPOQTUXPKRX-LBPRGKRZSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.8
• 重原子数：
  19
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.43
• 拓扑面积：
  82.8
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  tert-butyl (R)-2-isothiocyanato-1-phenylethylcarbamate 在 三氟乙酸 作用下， 以 二氯甲烷 为溶剂， 以411 mg的产率得到(R)-4-phenylimidazolidine-2-thione
  参考文献：
  名称：

  Dramatic Acceleration of an Acyl Transfer-Initiated Cascade by Using Electron-Rich Amidine-Based Catalysts

  摘要：

  A tandem rearrangement of alpha,beta-unsaturated, thioesters into tricyclic ene-lactones fails with conventional amidine-based catalysts, but becomes possible when their electron-rich analogs are employed. A highly diastereo- and enantioselective version of this process has been developed using H-PIP 1b, a chiral catalyst prepared over a decade ago, but never utilized since its disclosure.

  DOI：

  10.1021/acs.orglett.7b03044
• 作为产物：
  描述：

  二硫化碳 、 tert-butyl [(1R)-2-azido-1-phenylethyl]carbamate 在 三苯基膦 作用下， 以 二氯甲烷 为溶剂， 反应 16.0h， 生成 tert-butyl (R)-2-isothiocyanato-1-phenylethylcarbamate
  参考文献：
  名称：

  Dramatic Acceleration of an Acyl Transfer-Initiated Cascade by Using Electron-Rich Amidine-Based Catalysts

  摘要：

  A tandem rearrangement of alpha,beta-unsaturated, thioesters into tricyclic ene-lactones fails with conventional amidine-based catalysts, but becomes possible when their electron-rich analogs are employed. A highly diastereo- and enantioselective version of this process has been developed using H-PIP 1b, a chiral catalyst prepared over a decade ago, but never utilized since its disclosure.

  DOI：

  10.1021/acs.orglett.7b03044

文献信息

• Enantioselective Conjugate Addition of Both Aromatic Ketones and Acetone to Nitroolefins Catalyzed by Chiral Primary Amines Bearing Multiple Hydrogen-Bonding Donors
  作者：Zhong-Wen Sun、Fang-Zhi Peng、Ze-Qian Li、Li-Wei Zou、Shao-Xiong Zhang、Xiang Li、Zhi-Hui Shao

  DOI：10.1021/jo300011x

  日期：2012.4.20

  of chiral primary amine catalysts bearing multiple hydrogen-bonding donors have been designed and synthesized. The newly developed bifunctional organocatalysts efficiently catalyzed not only enantioselective conjugate addition of aromatic ketones to nitroolefins in good yields (up to 87%) with excellent enantioselectivities (97→99% ee) but also enantioselective conjugate addition of acetone to nitroolefins

  设计并合成了带有多个氢键供体的新型手性伯胺催化剂。新开发的双功能有机催化剂不仅能以良好的收率（97→99％ee）以良好的收率（高达87％）高效催化芳族酮对硝基烯烃的对映选择性共轭加成，而且还能以优异的收率（90催化丙酮）将丙酮对硝基选择性共轭加成。 –96％）具有高对映选择性（高达97％ee）。
• <i>N</i>-Urethane-Protected Amino Alkyl Isothiocyanates: Synthesis, Isolation, Characterization, and Application to the Synthesis of Thioureidopeptides
  作者：Vommina V. Sureshbabu、Shankar A. Naik、H. P. Hemantha、N. Narendra、Ushati Das、Tayur N. Guru Row

  DOI：10.1021/jo900675s

  日期：2009.8.7

  Synthetically useful N-Fmoc amino-alkyl isothiocyanates have been described, starting from protected amino acids. These compounds have been synthesized in excellent yields by thiocarbonylation of the monoprotected 1,2-diamines with CS2/TEA/p-TsCl, isolated as stable solids, and completely characterized. The procedure has been extended to the synthesis of amino alkyl isothiocyanates from Boc- and Z-protected amino acids as well. The utility of these isothiocyanates for peptidomimetics synthesis has been demonstrated by employing them in the preparation of a series of dithioureidopeptide esters. Boc-Gly-OH and Boc-Phe-OH derived isothiocyanates 9a and 9c have been obtained as single crystals and their structures solved through X-ray diffraction. They belong to the orthorhombic crystal system, and have a single molecule in the asymmetric unit (Z' = 1). 9a crystallizes in the centrosymmetric space group Pbca, while 9c crystallizes in the noncentrosymmetric space group P2(1)2(1)2(1).