(R)-1-<(Benzyloxy)carbonyl>-2-propyl-2,3-dihydro-4-pyridone | 146254-00-4

• 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: (R)-1-<(Benzyloxy)carbonyl>-2-propyl-2,3-dihydro-4-pyridone
• 英文别名: benzyl (2R)-4-oxo-2-propyl-3,4-dihydropyridine-1(2H)-carboxylate；(R)-1-[(Benzyloxy)carbonyl]-2-propyl-2,3-dihydro-4-pyridone；benzyl (2R)-4-oxo-2-propyl-2,3-dihydropyridine-1-carboxylate
• CAS: 146254-00-4
• 化学式: C₁₆H₁₉NO₃
• 分子量: 273.332
• InChiKey: SYWFGYZHYRYOKS-CQSZACIVSA-N

物化性质

• 沸点：
  410.9±45.0 °C(predicted)
• 密度：
  1.140±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  20
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  46.6
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (R)-1-<(Benzyloxy)carbonyl>-2-propyl-2,3-dihydro-4-pyridone 在 palladium on activated charcoal 、 platinum on activated charcoal 氢气 、 lithium carbonate 、 N,N-二甲基甲酰胺 、 三氯氧磷 作用下， 以 乙醇 、 三氯乙烯 为溶剂， 反应 18.0h， 生成 (R)-2-丙基哌啶
  参考文献：
  名称：

  Conversion of N-acyl-2,3-dihydro-4-pyridones to 4-chloro-1,2-dihydropyridines using the Vilsmeier Reagent. Synthesis of (-)-coniine and (±)-lupinine

  摘要：

  The full details are given of a study on the conversion of dihydropyridones of the type 3 to 4-chloro-1,2-dihydropyridines 4 using a Vilsmeier reagent. The use of 1 equiv of Vilsmeier reagent under mild conditions (ClCHCCl2, rt) transformed several racemic N-acyl-2,3-dihydro-4-pyridones 3 to dihydropyridines 4 in very good to excellent yields (83-96%). A C-3 methyl group can be tolerated as was demonstrated in the preparation of 4-chloro-3-methyl-1,2-dihydropyridine 7 from dihydropyridone 6 in 90 % yield. The utility of this conversion was demonstrated in the synthesis of the piperidine alkaloid, (-)-coniine. The synthesis of (-)-coniine was completed in five steps from 4-methoxy-3-(triisopropylsilyl)pyridine in 54% overall yield. When 2,3-dihydro-4-pyridones are treated with excess Vilsmeier reagent, good yields of 4-chloro-3-formyl-1,2-dihydropyridines result. These heterocycles are useful intermediates for alkaloid preparation, as was shown by two syntheses of the quinolizidine alkaloid, (+/-)-lupinine, carried out in three and five steps, respectively.

  DOI：

  10.1021/jo00079a018
• 作为产物：
  描述：

  (R)-2-Propyl-1-<((1R,2S,5R)-8-phenylmenthoxy)carbonyl>-5-(triisopropylsilyl)-2,3-dihydro-4-pyridone 在 正丁基锂 、 sodium methylate 、 草酸 作用下， 以 四氢呋喃 、 甲醇 、 正己烷 为溶剂， 反应 17.5h， 生成 (R)-1-<(Benzyloxy)carbonyl>-2-propyl-2,3-dihydro-4-pyridone
  参考文献：
  名称：

  Conversion of N-acyl-2,3-dihydro-4-pyridones to 4-chloro-1,2-dihydropyridines using the Vilsmeier Reagent. Synthesis of (-)-coniine and (±)-lupinine

  摘要：

  The full details are given of a study on the conversion of dihydropyridones of the type 3 to 4-chloro-1,2-dihydropyridines 4 using a Vilsmeier reagent. The use of 1 equiv of Vilsmeier reagent under mild conditions (ClCHCCl2, rt) transformed several racemic N-acyl-2,3-dihydro-4-pyridones 3 to dihydropyridines 4 in very good to excellent yields (83-96%). A C-3 methyl group can be tolerated as was demonstrated in the preparation of 4-chloro-3-methyl-1,2-dihydropyridine 7 from dihydropyridone 6 in 90 % yield. The utility of this conversion was demonstrated in the synthesis of the piperidine alkaloid, (-)-coniine. The synthesis of (-)-coniine was completed in five steps from 4-methoxy-3-(triisopropylsilyl)pyridine in 54% overall yield. When 2,3-dihydro-4-pyridones are treated with excess Vilsmeier reagent, good yields of 4-chloro-3-formyl-1,2-dihydropyridines result. These heterocycles are useful intermediates for alkaloid preparation, as was shown by two syntheses of the quinolizidine alkaloid, (+/-)-lupinine, carried out in three and five steps, respectively.

  DOI：

  10.1021/jo00079a018

文献信息

• Catalytic Enantioselective Addition of Dialkylzinc Reagents to<i>N</i>-Acylpyridinium Salts
  作者：M. Ángeles Fernández-Ibáñez、Beatriz Maciá、Maria Gabriella Pizzuti、Adriaan J. Minnaard、Ben L. Feringa

  DOI：10.1002/anie.200904981

  日期：2009.11.23

  A pinch of salt: The first catalytic addition of dialkylzinc reagents to N‐acylpyridinium salts with good yields and excellent enantioselectivities uses a copper–(S)‐L complex as the catalyst. The versatility of the method is illustrated in the formal synthesis of the alkaloid (R)‐coniine. Bn=benzyl, Tf=trifluoromethanesulfonyl.

  一小撮盐：将二烷基锌试剂首次催化添加到N-酰基吡啶鎓盐中，具有良好的收率和出色的对映选择性，使用的是铜-（S）-L络合物作为催化剂。该方法的多功能性在生物碱（R）-i氨酸的形式合成中得到了说明。Bn ＝苄基，Tf ＝三氟甲磺酰基。