benzyl-2-(3-methoxyphenyl)-2-oxoacetate | 1339804-77-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: benzyl-2-(3-methoxyphenyl)-2-oxoacetate
• CAS: 1339804-77-1
• 化学式: C₁₆H₁₄O₄
• 分子量: 270.285
• InChiKey: RQZJRIFQWTTZFI-UHFFFAOYSA-N

物化性质

• 沸点：
  420.9±38.0 °C(Predicted)
• 密度：
  1?+-.0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.62
• 重原子数：
  20.0
• 可旋转键数：
  5.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  52.6
• 氢给体数：
  0.0
• 氢受体数：
  4.0

反应信息

• 作为反应物：
  描述：

  benzyl-2-(3-methoxyphenyl)-2-oxoacetate 在 (R,R)-QuinoxP 、 氢气 、 palladium diacetate 、 四氯化钛 、 三乙胺 作用下， 以 二氯甲烷 、 2,2,2-三氟乙醇 为溶剂， 20.0 ℃ 、100.0 kPa 条件下， 反应 24.0h， 生成 (S)-benzyl 2-(3-methoxyphenyl)-2-((4-methylphenyl)sulfonamido)acetate
  参考文献：
  名称：

  Pd(OAc)₂-Catalyzed Asymmetric Hydrogenation of α-Iminoesters

  摘要：

  An efficient Pd(OAc)(2)-catalyzed asymmetric hydrogenation of alpha-iminoesters was realized for the first time at 1 atm hydrogen pressure and room temperature. Pd(OAc)(2), a less expensive Pd salt with low toxicity, was found to be the most suitable catalyst precursor rather than Pd(TFA)(2) which is usually the catalyst of choice for homogeneous asymmetric hydrogenation. The chiral alpha-arylglycine fragments are widely found in many chiral products and bioactive molecules.

  DOI：

  10.1021/acs.orglett.9b03452
• 作为产物：
  描述：

  3-甲氧基苯乙酮 在 吡啶 、 selenium(IV) oxide 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下， 以 甲基叔丁基醚 为溶剂， 反应 6.0h， 生成 benzyl-2-(3-methoxyphenyl)-2-oxoacetate
  参考文献：
  名称：

  Pd(OAc)₂-Catalyzed Asymmetric Hydrogenation of α-Iminoesters

  摘要：

  An efficient Pd(OAc)(2)-catalyzed asymmetric hydrogenation of alpha-iminoesters was realized for the first time at 1 atm hydrogen pressure and room temperature. Pd(OAc)(2), a less expensive Pd salt with low toxicity, was found to be the most suitable catalyst precursor rather than Pd(TFA)(2) which is usually the catalyst of choice for homogeneous asymmetric hydrogenation. The chiral alpha-arylglycine fragments are widely found in many chiral products and bioactive molecules.

  DOI：

  10.1021/acs.orglett.9b03452

文献信息

• Brønsted base-catalyzed three-component coupling reaction of α-ketoesters, imines, and diethyl phosphite utilizing [1,2]-phospha-Brook rearrangement
  作者：Azusa Kondoh、Masahiro Terada

  DOI：10.1039/c6ob00739b

  日期：——

  α-ketoesters, imines, and diethyl phosphite under Brønsted base catalysis was developed by utilizing the [1,2]-phospha-Brook rearrangement. The reaction involves the generation of ester enolates via the umpolung process, i.e., the chemoselective addition of diethyl phosphite to α-ketoesters followed by the [1,2]-phospha-Brook rearrangement, and the trapping of the resulting enolates by imines preferentially

  利用[1,2]-磷-布鲁克重排反应，在布朗斯台德碱催化下，开发了α-酮酸酯，亚胺和亚磷酸二乙酯的三组分偶联反应。该反应涉及通过聚对苯二酚过程产生酯烯酸酯，即，将亚磷酸二乙酯化学选择性加成到α-酮酸酯上，然后进行[1,2]-磷-布鲁克重排，以及亚胺比α-酮酸酯和质子优先捕获亚油酸酯。该操作简单的反应可以以高收率提供在α-位具有氧官能度的致密官能化的β-氨基酸衍生物。非对映选择性很大程度上取决于底物和反应温度，这归因于酯烯酸酯向亚胺的添加的可逆性。该方法进一步扩展到α-酮酸酯，β-硝基苯乙烯和亚磷酸二乙酯的反应。
• 2-Oxo promoted hydrophosphonylation & aerobic intramolecular nucleophilic displacement reaction
  作者：Satyanarayana Battula、Narsaiah Battini、Deepika Singh、Qazi Naveed Ahmed

  DOI：10.1039/c5ob01310k

  日期：——

  the tervalent phosphite form towards 2-oxoaldehydes in the synthesis of α-hydroxy-β-oxophosphonates. The in situ activated α-C–H atom of α-hydroxy-β-oxophosphonates sustains aerobic intramolecular nucleophilic displacement in a curious way to produce α-oxoester.

  已经描述了用于合成α-羟基-β-氧代膦酸酯和α-氧代酯的高效无催化剂方法。α-氧代醛中存在2-氧代基团是促进α-羟基-β-氧代膦酸酯合成中三价亚磷酸酯形式向2-氧代醛类反应的关键因素。在原位以奇特的方式，以产生α氧代酯α羟基-β-oxophosphonates维持有氧分子内亲核置换的活化α-C-H原子。
• Palladium-catalyzed C–H acetoxylation of 2-methoxyimino-2-aryl-acetates and acetamides
  作者：Liang Wang、Xu-Dong Xia、Wei Guo、Jia-Rong Chen、Wen-Jing Xiao

  DOI：10.1039/c1ob05887h

  日期：——

  Palladium-catalyzed C–H acetoxylation reactions of 2-methoxyimino-2-aryl-acetates and acetamides have been developed. These transformations feature excellent regioselectivity, wide substrate scope, and moderate to good yields. The product can be easily converted into naturally unprecedented α-amino acids in excellent yields.

  开发了以钯为催化剂的2-甲氧基亚氨基-2-芳基乙酸酯和乙酰胺的C–H醋酸化反应。这些转化展示了出色的区域选择性、广泛的底物适用性和中到好的产率。产物可以轻松转化为自然前所未有的α-氨基酸，产率极高。