methyl 2-(isobutyrylamino)-2-phenylacetate

• 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: methyl 2-(isobutyrylamino)-2-phenylacetate
• 英文别名: Isobutyrylamino-phenyl-acetic acid methyl ester；methyl 2-(2-methylpropanoylamino)-2-phenylacetate
• 化学式: C₁₃H₁₇NO₃
• mdl: MFCD01325780
• 分子量: 235.283
• InChiKey: BBIAZVMAEQDDAJ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  17
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.384
• 拓扑面积：
  55.4
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  methyl 2-(isobutyrylamino)-2-phenylacetate 在 N,N'-二环己基碳二亚胺 、 sodium hydroxide 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 生成 2-Isopropyl-4-phenyl-2-oxazolin-5-on
  参考文献：
  名称：

  Regiodivergent Enantioselective γ-Additions of Oxazolones to 2,3-Butadienoates Catalyzed by Phosphines: Synthesis of α,α-Disubstituted α-Amino Acids and N,O-Acetal Derivatives

  摘要：

  Phosphine-catalyzed regiodivergent enantioselective C-2- and C-4-selective gamma-additions of oxazolones to 2,3-butadienoates have been developed. The C-4-selective gamma-addition of oxazolones occurred in a highly enantioselective manner when 2-aryl-4-alkyloxazol-5-(4H)-ones were employed as pronudeophiles. With the employment of 2-alkyl-4-aryloxazol-5-(4H)-ones as the donor, C-2-selective gamma-addition of oxazolones took place in a highly enantioselective manner. The C-4-selective adducts provided rapid access to optically enriched alpha,alpha-disubstituted alpha-amino acid derivatives, and the C-2-selective products led to facile synthesis of chiral N,O-acetals and gamma-lactols. Theoretical studies via DFT calculations suggested that the origin of the observed regioselectivity was due to the distortion energy that resulted from the interaction between the nudeophilic oxazolide and the electrophilic phosphonium intermediate.

  DOI：

  10.1021/jacs.5b10524
• 作为产物：
  描述：

  methyl 2-((diphenylmethylene)amino)-2-phenylacetate 在 盐酸 、 三乙胺 作用下， 以 二氯甲烷 、 水 为溶剂， 生成 methyl 2-(isobutyrylamino)-2-phenylacetate
  参考文献：
  名称：

  Regiodivergent Enantioselective γ-Additions of Oxazolones to 2,3-Butadienoates Catalyzed by Phosphines: Synthesis of α,α-Disubstituted α-Amino Acids and N,O-Acetal Derivatives

  摘要：

  Phosphine-catalyzed regiodivergent enantioselective C-2- and C-4-selective gamma-additions of oxazolones to 2,3-butadienoates have been developed. The C-4-selective gamma-addition of oxazolones occurred in a highly enantioselective manner when 2-aryl-4-alkyloxazol-5-(4H)-ones were employed as pronudeophiles. With the employment of 2-alkyl-4-aryloxazol-5-(4H)-ones as the donor, C-2-selective gamma-addition of oxazolones took place in a highly enantioselective manner. The C-4-selective adducts provided rapid access to optically enriched alpha,alpha-disubstituted alpha-amino acid derivatives, and the C-2-selective products led to facile synthesis of chiral N,O-acetals and gamma-lactols. Theoretical studies via DFT calculations suggested that the origin of the observed regioselectivity was due to the distortion energy that resulted from the interaction between the nudeophilic oxazolide and the electrophilic phosphonium intermediate.

  DOI：

  10.1021/jacs.5b10524

文献信息

• An Efficient Method for the N‐Debenzylation of Aromatic Heterocycles
  作者：T. Srinivasa Rao、Pramod S. Pandey

  DOI：10.1081/scc-200028570

  日期：2004.1

  Abstract The N‐debenzylation of aromatic heterocycles such as substituted pyrroles and indoles, having functional groups like ester, amide, halo, and nitrile, by using sodium in liquid ammonia in the presence of t‐BuOH at −78°C cleanly affords N‐debenzylated aromatic heterocycles in good yields.

  摘要 具有酯、酰胺、卤素和腈等官能团的芳香杂环，如取代的吡咯和吲哚，在 -78°C 下，在 t-BuOH 存在下，在液氨中使用钠进行 N-脱苄基，干净地提供 N-以良好的产率脱苄芳族杂环。