cis-(2S,3S)-(-)-N-(p-toluenesulfonyl)-2-carbomethoxy-3-methyl-3-phenylaziridine | 250378-51-9

• 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: cis-(2S,3S)-(-)-N-(p-toluenesulfonyl)-2-carbomethoxy-3-methyl-3-phenylaziridine
• 英文别名: methyl (2S,3S)-3-methyl-1-(4-methylphenyl)sulfonyl-3-phenylaziridine-2-carboxylate
• CAS: 250378-51-9
• 化学式: C₁₈H₁₉NO₄S
• 分子量: 345.419
• InChiKey: QGYHKQXCADCXMM-FAZYOCGDSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  24
• 可旋转键数：
  5
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.28
• 拓扑面积：
  71.8
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  cis-(2S,3S)-(-)-N-(p-toluenesulfonyl)-2-carbomethoxy-3-methyl-3-phenylaziridine 在 钯 甲酸 、 氢溴酸 作用下， 以 乙醇 为溶剂， 反应 4.0h， 生成 (2S,3S)-methylphenylalanine
  参考文献：
  名称：

  Aza-Darzens Asymmetric Synthesis of N-(p-Toluenesulfinyl)aziridine 2-Carboxylate Esters from Sulfinimines (N-Sulfinyl Imines)

  摘要：

  The one-step aza-Darzens reaction of sulfinimines 2 with lithium alpha-bromoenolates readily affords diversely substituted cis and trans N-sulfinylaziridine 2-carboxylate esters 3 and 7 in good yield and excellent diastereoselectivity. Higher yields, but lower de's, result when a mixture of the alpha-bromo ester and 2 are treated with base. The N-sulfinyl group is transformed, nearly quantitatively, without ring opening, into the N-tosyl activating group by oxidation with m-CPBA. Selective removal of the N-sulfinyl group in aziridines 3a and 3h with TFA/H2O affords VI-aziridines 21 which are difficult to prepared by other means. However, C(3) activated azirines such as 3b undergo ring-opening under these conditions. Alternatively, the N-sulfinyl group, even in C(3)-activated aziridines, was selectively and efficiently removed by treatment of the aziridine with 2 equiv of MeMgBr.

  DOI：

  10.1021/jo990907j
• 作为产物：
  描述：

  cis-(S_S,2S,3S)-(-)-N-p-toluenesulfinyl-2-carbomethoxy-3-methyl-3-phenylaziridine 在 间氯过氧苯甲酸 作用下， 以 氯仿 为溶剂， 以95%的产率得到cis-(2S,3S)-(-)-N-(p-toluenesulfonyl)-2-carbomethoxy-3-methyl-3-phenylaziridine
  参考文献：
  名称：

  Aza-Darzens Asymmetric Synthesis of N-(p-Toluenesulfinyl)aziridine 2-Carboxylate Esters from Sulfinimines (N-Sulfinyl Imines)

  摘要：

  The one-step aza-Darzens reaction of sulfinimines 2 with lithium alpha-bromoenolates readily affords diversely substituted cis and trans N-sulfinylaziridine 2-carboxylate esters 3 and 7 in good yield and excellent diastereoselectivity. Higher yields, but lower de's, result when a mixture of the alpha-bromo ester and 2 are treated with base. The N-sulfinyl group is transformed, nearly quantitatively, without ring opening, into the N-tosyl activating group by oxidation with m-CPBA. Selective removal of the N-sulfinyl group in aziridines 3a and 3h with TFA/H2O affords VI-aziridines 21 which are difficult to prepared by other means. However, C(3) activated azirines such as 3b undergo ring-opening under these conditions. Alternatively, the N-sulfinyl group, even in C(3)-activated aziridines, was selectively and efficiently removed by treatment of the aziridine with 2 equiv of MeMgBr.

  DOI：

  10.1021/jo990907j

文献信息

• Asymmetric Synthesis of 2<i>H</i>-Azirine 2-Carboxylate Esters
  作者：Franklin A. Davis、Hu Liu、Chang-Hsing Liang、G. Venkat Reddy、Yulian Zhang、Tianan Fang、Donald D. Titus

  DOI：10.1021/jo991389f

  日期：1999.11.1

  sulfenic acid (RSOH) from nonracemic N-sulfinylaziridine 2-carboxylate esters (4). Optimum yields were obtained when the aziridine was treated with TMSCl at -95 degrees C followed by LDA, which was attributed to the improved leaving group ability of an silicon-oxonium species. By using this new methodology the first asymmetric syntheses of the marine cytotoxic antibiotics (R)-(-)- and (S)-(+)-dysidazirine

  最小的不饱和氮杂环2H-Azirine 2-羧酸酯（5）可通过从非外消旋N-亚磺酰基氮丙啶2​​-羧酸酯（4）中碱诱导的亚磺酸（RSOH）的消除，轻松制备成对映体纯形式。当在-95℃下用TMCSI随后用LDA对氮丙啶进行处理时，可获得最佳产率，这归因于硅-氧鎓物种的离去基团能力提高。通过使用这种新方法，完成了海洋细胞毒性抗生素（R）-（-）-和（S）-（+）-dysidazirine（2）的第一个不对称合成。