prop-2-ynyl N-[4-(2-hydroxyethyl)phenyl]carbamate | 845253-46-5

• 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: prop-2-ynyl N-[4-(2-hydroxyethyl)phenyl]carbamate
• CAS: 845253-46-5
• 化学式: C₁₂H₁₃NO₃
• mdl: MFCD09030285
• 分子量: 219.24
• InChiKey: OKJANWJEDBSNHI-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.2
• 重原子数：
  16
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  58.6
• 氢给体数：
  2
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  prop-2-ynyl N-[4-(2-hydroxyethyl)phenyl]carbamate 在 lithium hydroxide 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 1.5h， 以90%的产率得到3-[4-(2-Hydroxyethyl)phenyl]-4-methylidene-1,3-oxazolidin-2-one
  参考文献：
  名称：

  N-芳基和N-烷基-O-炔丙基氨基甲酸酯的碱催化环化

  摘要：

  详细研究了N-芳基和N-烷基-O-炔丙基氨基甲酸酯的碱催化环化反应。分析了各种碱和溶剂对该环化反应功效的影响，并报道了一种新的碱-溶剂体系（DMF中的LiOH），用于这些氨基甲酸酯的有效环化。在这些条件下，许多差异取代的O-炔丙基氨基甲酸酯被环化为相应的2-恶唑烷酮。此处报道的反应条件温和，在所研究的任何底物中均未观察到副反应。在O的环化过程中，炔丙基碳酸酯基团不受影响-炔丙基氨基甲酸酯基团。由相应的烷基或芳基胺和相应的炔丙基氯甲酸酯制备炔丙基氨基甲酸酯，得到在氮原子上被不同取代的恶唑烷酮。N-芳基-O-炔丙基氨基甲酸酯容易与DOH中的LiOH环化为相应的恶唑烷酮，而N-烷基-O-炔丙基氨基甲酸酯在相同条件下反应缓慢。与未取代的氨基甲酸酯相比，在1位取代的O-丙炔基氨基甲酸酯趋于更快地环化，而在3位取代的那些-环戊烯则慢得多。

  DOI：

  10.1016/j.tet.2007.06.066
• 作为产物：
  描述：

  2-[4-(Prop-2-ynoxycarbonylamino)phenyl]ethyl prop-2-ynyl carbonate 在 benzyltriethylammonium tetrathiomolybdate 作用下， 以 乙腈 为溶剂， 反应 0.5h， 以78%的产率得到prop-2-ynyl N-[4-(2-hydroxyethyl)phenyl]carbamate
  参考文献：
  名称：

  Highly Selective Deblocking of Propargyl Carbonates in the Presence of Propargyl Carbamates with Tetrathiomolybdate

  摘要：

  Propargyloxycarbonyl chloride, 1, has been used to protect the hydroxyl and amino functionalities of amino alcohols and aminophenols in one pot using triethylamine or pyridine as a base. The increased reactivity of benzyltriethylammonium tetrathiomolybdate, 2, toward propargyl carbonates over propargyl carbamates is studied in detail and has been exploited further to develop an orthogonal protection strategy for the hydroxyl and amino functionalities. For example, 2-amino-1-butanol, 6a, was treated with 1 to get the N,O-diPoc compound 7a in 90% yield, which when treated with 1.1 equiv of 2 at room temperature removes the Poc group attached to oxygen while leaving the one attached to nitrogen intact to yield compound Sa in 85% yield. This particular observation offers a new protecting strategy where an amine and an alcohol group can be protected simultaneously in one pot, and in a later synthetic step, if the alcohol group has to be deprotected selectively, it can be achieved with 1 equiv of 2.

  DOI：

  10.1021/jo048777o

文献信息

• Base catalyzed cyclization of N-aryl and N-alkyl-O-propargyl carbamates to 4-alkylidene-2-oxazolidinones
  作者：Ramapanicker Ramesh、Yogesh Chandrasekaran、Rajendran Megha、Srinivasan Chandrasekaran

  DOI：10.1016/j.tet.2007.06.066

  日期：2007.9

  The base catalyzed cyclization of N-aryl and N-alkyl-O-propargyl carbamates is studied in detail. The effect of various bases and solvents on the efficacy of this cyclization reaction is analyzed and a new base–solvent system (LiOH in DMF) for effective cyclization of these carbamates is reported. A number of differentially substituted O-propargyl carbamates were cyclized to the corresponding 2-oxazolidinones

  详细研究了N-芳基和N-烷基-O-炔丙基氨基甲酸酯的碱催化环化反应。分析了各种碱和溶剂对该环化反应功效的影响，并报道了一种新的碱-溶剂体系（DMF中的LiOH），用于这些氨基甲酸酯的有效环化。在这些条件下，许多差异取代的O-炔丙基氨基甲酸酯被环化为相应的2-恶唑烷酮。此处报道的反应条件温和，在所研究的任何底物中均未观察到副反应。在O的环化过程中，炔丙基碳酸酯基团不受影响-炔丙基氨基甲酸酯基团。由相应的烷基或芳基胺和相应的炔丙基氯甲酸酯制备炔丙基氨基甲酸酯，得到在氮原子上被不同取代的恶唑烷酮。N-芳基-O-炔丙基氨基甲酸酯容易与DOH中的LiOH环化为相应的恶唑烷酮，而N-烷基-O-炔丙基氨基甲酸酯在相同条件下反应缓慢。与未取代的氨基甲酸酯相比，在1位取代的O-丙炔基氨基甲酸酯趋于更快地环化，而在3位取代的那些-环戊烯则慢得多。
• Highly Selective Deblocking of Propargyl Carbonates in the Presence of Propargyl Carbamates with Tetrathiomolybdate
  作者：R. Ramesh、Ramakrishna G. Bhat、Srinivasan Chandrasekaran

  DOI：10.1021/jo048777o

  日期：2005.2.1

  Propargyloxycarbonyl chloride, 1, has been used to protect the hydroxyl and amino functionalities of amino alcohols and aminophenols in one pot using triethylamine or pyridine as a base. The increased reactivity of benzyltriethylammonium tetrathiomolybdate, 2, toward propargyl carbonates over propargyl carbamates is studied in detail and has been exploited further to develop an orthogonal protection strategy for the hydroxyl and amino functionalities. For example, 2-amino-1-butanol, 6a, was treated with 1 to get the N,O-diPoc compound 7a in 90% yield, which when treated with 1.1 equiv of 2 at room temperature removes the Poc group attached to oxygen while leaving the one attached to nitrogen intact to yield compound Sa in 85% yield. This particular observation offers a new protecting strategy where an amine and an alcohol group can be protected simultaneously in one pot, and in a later synthetic step, if the alcohol group has to be deprotected selectively, it can be achieved with 1 equiv of 2.