| 896110-66-0

• CAS: 896110-66-0
• 化学式: C₁₀H₁₈O₅S
• 分子量: 250.316
• InChiKey: NTOAWLOBLRVNDT-WPRPVWTQSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.08
• 重原子数：
  16.0
• 可旋转键数：
  4.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.9
• 拓扑面积：
  69.67
• 氢给体数：
  0.0
• 氢受体数：
  5.0

反应信息

• 作为反应物：
  描述：

  在 咪唑 、 3,5-二甲基吡唑 、 chromium(VI) oxide 、 lithium aluminium tetrahydride 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下， 以 乙醚 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 15.5h， 生成 (S)-4-(tert-Butyl-diphenyl-silanyloxymethyl)-4-methyl-cyclopent-2-enone
  参考文献：
  名称：

  Evaluation of possible intramolecular [4+2] cycloaddition routes for assembling the central tetracyclic core of the potent marine antiinflammatory agent mangicol A

  摘要：

  A plan for enantioselective construction of the mangicol A framework by means of intramolecular Diels-Alder cycloaddition is outlined. First to be assembled is the enantiopure cyclopentenecarboxylic acid 16. Of the several approaches targeting the 1,3-diene component 56, only that involving palladium-catalyzed enyne cyclization proved successful. Following the coupling of 16 to 56, we were unable to bring about any detectable level of (4 pi+2 pi) cycloaddition. Activation of the diene by incorporation of an OSiEt3 substituent on a terminal sp(2)-hybridized center likewise proved unsuccessful. Further facilitation was sought in the form of cyclopentenonecarboxylate 66. However, thermal activation, Lewis acid catalysis, and high-pressure conditions proved ineffective and did not lead to C-C bond formation. These studies serve to underscore the extent to which steric complications can complicate matters and the extent to which they must be skirted to arrive at the title compound. (c) 2006 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2005.11.096
• 作为产物：
  描述：

  (1S,2S)-2-hydroxy-1-methylcylopentanecarboxylic acid ethyl ester 、 甲基磺酰氯 在 三乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 3.0h， 生成
  参考文献：
  名称：

  Evaluation of possible intramolecular [4+2] cycloaddition routes for assembling the central tetracyclic core of the potent marine antiinflammatory agent mangicol A

  摘要：

  A plan for enantioselective construction of the mangicol A framework by means of intramolecular Diels-Alder cycloaddition is outlined. First to be assembled is the enantiopure cyclopentenecarboxylic acid 16. Of the several approaches targeting the 1,3-diene component 56, only that involving palladium-catalyzed enyne cyclization proved successful. Following the coupling of 16 to 56, we were unable to bring about any detectable level of (4 pi+2 pi) cycloaddition. Activation of the diene by incorporation of an OSiEt3 substituent on a terminal sp(2)-hybridized center likewise proved unsuccessful. Further facilitation was sought in the form of cyclopentenonecarboxylate 66. However, thermal activation, Lewis acid catalysis, and high-pressure conditions proved ineffective and did not lead to C-C bond formation. These studies serve to underscore the extent to which steric complications can complicate matters and the extent to which they must be skirted to arrive at the title compound. (c) 2006 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2005.11.096