dimethyl 2-(2-phenylethylidene)cyclopropane-1,1-dicarboxylate | 1126722-51-7

• 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: dimethyl 2-(2-phenylethylidene)cyclopropane-1,1-dicarboxylate
• CAS: 1126722-51-7
• 化学式: C₁₅H₁₆O₄
• 分子量: 260.29
• InChiKey: XJBURSBTXLYRNL-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  19
• 可旋转键数：
  6
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  dimethyl 2-(2-phenylethylidene)cyclopropane-1,1-dicarboxylate 在 scandium tris(trifluoromethanesulfonate) 作用下， 以 二氯甲烷 为溶剂， 反应 62.0h， 以87%的产率得到dimethyl 2-(3,4-dihydronaphthalen-2-yl)malonate
  参考文献：
  名称：

  Lewis Acid Catalyzed Ring-Opening Intramolecular Friedel−Crafts Alkylation of Methylenecyclopropane 1,1-Diesters

  摘要：

  The first Friedel-Crafts reaction initiated by the direct generation of a carbocation at the C3 position of MCP 1,1-diesters through distal-bond cleavage was presented. The described method supplied a new synthetic strategy to prepare indene and hydronaphthalene derivatives in moderate to excellent yields under mild conditions.

  DOI：

  10.1021/ol802301e

文献信息

• A Highly Site-, Regio-, and Stereoselective Lewis Acid Catalyzed Formal [3+3] Cycloaddition of Methylenecyclopropane-1,1-Diesters with C,N-Diarylnitrones
  作者：Bao Hu、Jianlin Zhu、Siyang Xing、Jie Fang、Ding Du、Zhongwen Wang

  DOI：10.1002/chem.200801990

  日期：2009.1.2

  Another pathway: A new type of Lewis acid promoted [3+3] cycloaddition of methylenecyclopropane‐1,1‐diesters with C,N‐diarylnitrones is disclosed. This cycloaddition is highly site‐, regio‐, and stereoselective and proceeds in moderate‐to‐excellent yields. A three‐component one‐pot version of the cycloaddition is also reported.

  另一途径：公开了一种新型的路易斯酸促进了亚甲基环丙烷-1,1-二酯与C，N-二芳基硝酮的[3 + 3]环加成反应。这种环加成反应具有很高的位点，区域和立体选择性，产率中等至优异。还报告了三组分一锅法的环加成反应。
• Lewis acid-catalyzed nucleophilic ring-opening/intramolecular Conia-ene reactions of methylenecyclopropane 1,1-diesters with propargyl alcohols
  作者：Bao Hu、Jun Ren、Zhongwen Wang

  DOI：10.1016/j.tet.2010.11.048

  日期：2011.1

  Lewis acid-catalyzed nucleophilic ring opening of methylenecyclopropane (MCP) 1,1-diesters with propargyl alcohols. Unlike the proximal-bond cleavage mode observed in cases of unactivated MCPs, the intrinsic characteristic of MCP 1,1-diesters gave a regiospecific distal-bond cleavage under attack of propargyl alcohols as nucleophiles. By combining a subsequent intramolecular Conia-ene reaction, 3,5

  我们提出了路易斯酸催化的炔丙基醇与亚甲基环丙烷（MCP）1,1-二酯的亲核开环。与未激活的MCP情况下观察到的近端键裂解模式不同，MCP 1,1-二酯的内在特征在炔丙醇作为亲核试剂的攻击下产生了区域特异性的远端键裂解。通过结合随后的分子内Conia-ene反应，可以逐步或一锅法获得3,5-二亚甲基四氢吡喃。