(1R,7aS)-1,5,5,7a-tetramethyl-2,6-dioxa-4-azapentalen-3-one | 677344-50-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑烷类
• 英文名称: (1R,7aS)-1,5,5,7a-tetramethyl-2,6-dioxa-4-azapentalen-3-one
• 英文别名: (7R,7aS)-3,3,7,7a-tetramethyl-1,7-dihydro-[1,3]oxazolo[3,4-c][1,3]oxazol-5-one
• CAS: 677344-50-2
• 化学式: C₉H₁₅NO₃
• 分子量: 185.223
• InChiKey: GWSFFVRXOBHZTE-MUWHJKNJSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.9
• 重原子数：
  13
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.89
• 拓扑面积：
  38.8
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (1R,7aS)-1,5,5,7a-tetramethyl-2,6-dioxa-4-azapentalen-3-one 在 盐酸 、 jones reagent 作用下， 以 四氢呋喃 、 水 、 丙酮 为溶剂， 反应 55.0h， 生成 (2R,3R)-2-铵基-3-羟基-2-甲基丁酸酯
  参考文献：
  名称：

  α-Methylserinals as an access to α-methyl-β-hydroxyamino acids: application in the synthesis of all stereoisomers of α-methylthreonine

  摘要：

  The asymmetric synthesis of all stereoisomers of alpha-methylthreonine using a stereodivergent synthetic route starting from (S)- and (R)-N-Boc-N,O-isopropylidene-alpha-methylserinals is reported. The key step involves the asymmetric addition of methylmagnesium bromide to these aldehydes with a high level of asymmetric induction being observed. This methodology represents a powerful tool for the synthesis of different beta-substituted alpha-methylserines. (C) 2003 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2003.12.001
• 作为产物：
  描述：

  (S)-N-tert-butoxycarbonyl-N,O-isopropylidene-α-methylserinal 在 sodium hydride 、 tetrabutylammonium borohydride 作用下， 以 四氢呋喃 、 甲醇 、 N,N-二甲基甲酰胺 为溶剂， 反应 10.25h， 生成 (1R,7aS)-1,5,5,7a-tetramethyl-2,6-dioxa-4-azapentalen-3-one
  参考文献：
  名称：

  α-Methylserinals as an access to α-methyl-β-hydroxyamino acids: application in the synthesis of all stereoisomers of α-methylthreonine

  摘要：

  The asymmetric synthesis of all stereoisomers of alpha-methylthreonine using a stereodivergent synthetic route starting from (S)- and (R)-N-Boc-N,O-isopropylidene-alpha-methylserinals is reported. The key step involves the asymmetric addition of methylmagnesium bromide to these aldehydes with a high level of asymmetric induction being observed. This methodology represents a powerful tool for the synthesis of different beta-substituted alpha-methylserines. (C) 2003 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2003.12.001