Ethyl 2-benzoyl-4-(phenylseleno)-5-azidopentanoate | 181945-64-2

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: Ethyl 2-benzoyl-4-(phenylseleno)-5-azidopentanoate
• 英文别名: Ethyl 5-azido-2-benzoyl-4-phenylselanylpentanoate
• CAS: 181945-64-2
• 化学式: C₂₀H₂₁N₃O₃Se
• 分子量: 430.365
• InChiKey: LTUXMSZDBKTJIU-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.57
• 重原子数：
  27
• 可旋转键数：
  11
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  57.7
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  Ethyl 2-benzoyl-4-(phenylseleno)-5-azidopentanoate 在 双氧水 、 三苯基膦 作用下， 以 甲醇 、 苯 为溶剂， 反应 1.25h， 生成 2-苯基烟酸乙酯
  参考文献：
  名称：

  Synthesis of nitrogen-containing heterocycles from the azido-selenenylation products of unsaturated carbonyl compounds

  摘要：

  Terminal alkenes containing a remote carbonyl group reacted with iodobenzene diacetate, diphenyl diselenide, and sodium azide to afford the products of azido-phenylselenenylation of the double bond. Owing to its radical nature, this reaction proceeded with complete anti-Markovnikov regioselectivity. Under the influence of triphenylphosphine in benzene the azido group reacted with the carbonyl function to afford the corresponding ring-closure reaction products containing a carbon nitrogen double bond. Thus, starting from beta,gamma- or gamma,delta-unsaturated esters, the corresponding cyclic imino ethers were obtained. These could not be isolated but were directly transformed into beta-(phenylseleno) gamma-lactams or gamma-(phenylseleno) delta-lactams. The phenylseleno derivatives of tetrahydropyridine were formed starting both from gamma,delta-unsaturated ketones and from alpha-allyl beta-keto esters. In the latter case, the cyclization reaction is chemoselective and involves the ketonic carbonyl. The oxidation of these compounds with hydrogen peroxide directly produced the corresponding pyridines via selenoxide elimination followed by dehydrogenation. This simple reaction sequence represents a very useful general method to build up a 2-substituted pyridine ring. Several alkyl-, aryl-, and heteroarylpyridines, bipyridines, and a terpyridine have been prepared.

  DOI：

  10.1021/jo00074a042
• 作为产物：
  描述：

  二苯基二硒醚 、 ethyl 2-benzoylpent-4-enoate 在 sodium azide 、 碘苯二乙酸 作用下， 以 二氯甲烷 为溶剂， 反应 12.0h， 以50%的产率得到Ethyl 2-benzoyl-4-(phenylseleno)-5-azidopentanoate
  参考文献：
  名称：

  Synthesis of nitrogen-containing heterocycles from the azido-selenenylation products of unsaturated carbonyl compounds

  摘要：

  Terminal alkenes containing a remote carbonyl group reacted with iodobenzene diacetate, diphenyl diselenide, and sodium azide to afford the products of azido-phenylselenenylation of the double bond. Owing to its radical nature, this reaction proceeded with complete anti-Markovnikov regioselectivity. Under the influence of triphenylphosphine in benzene the azido group reacted with the carbonyl function to afford the corresponding ring-closure reaction products containing a carbon nitrogen double bond. Thus, starting from beta,gamma- or gamma,delta-unsaturated esters, the corresponding cyclic imino ethers were obtained. These could not be isolated but were directly transformed into beta-(phenylseleno) gamma-lactams or gamma-(phenylseleno) delta-lactams. The phenylseleno derivatives of tetrahydropyridine were formed starting both from gamma,delta-unsaturated ketones and from alpha-allyl beta-keto esters. In the latter case, the cyclization reaction is chemoselective and involves the ketonic carbonyl. The oxidation of these compounds with hydrogen peroxide directly produced the corresponding pyridines via selenoxide elimination followed by dehydrogenation. This simple reaction sequence represents a very useful general method to build up a 2-substituted pyridine ring. Several alkyl-, aryl-, and heteroarylpyridines, bipyridines, and a terpyridine have been prepared.

  DOI：

  10.1021/jo00074a042

文献信息

• Intramolecular Nucleophilic Deselenenylation Reactions Promoted by Benzeneselenenyl Triflate. Stereospecific Synthesis of Vicinal Amino Alcohol Precursors
  作者：Marco Tingoli、Lorenzo Testaferri、Andrea Temperini、Marcello Tiecco

  DOI：10.1021/jo960866g

  日期：1996.1.1

  nitrogen nucleophilic substituents, readily undergoes intramolecular nucleophilic displacement to afford azido-substituted heterocyclic compounds. This intramolecular substitution occurs with inversion of configuration at the carbon atom bearing the selenium atom. Starting from acetamido selenides and carbamato selenides, a stereocontrolled synthesis of the vicinal amino alcohol precursor oxazolines and

  用亲电子亚硒化剂活化后，邻位叠氮基硒化物的苯基硒基含有内部的氧或氮亲核取代基，容易发生分子内亲核取代，得到叠氮基取代的杂环化合物。这种分子内取代发生在带有硒原子的碳原子上的构型反转的情况下。从乙酰氨基硒化物和氨基甲酸酯硒化物开始，已经开发了邻位氨基醇前体恶唑啉和恶唑烷-2-酮的立体控制合成。
• Synthesis of nitrogen-containing heterocycles from the azido-selenenylation products of unsaturated carbonyl compounds
  作者：Marco Tingoli、Marcello Tiecco、Lorenzo Testaferri、Roberto Andrenacci、Roberta Balducci

  DOI：10.1021/jo00074a042

  日期：1993.10

  Terminal alkenes containing a remote carbonyl group reacted with iodobenzene diacetate, diphenyl diselenide, and sodium azide to afford the products of azido-phenylselenenylation of the double bond. Owing to its radical nature, this reaction proceeded with complete anti-Markovnikov regioselectivity. Under the influence of triphenylphosphine in benzene the azido group reacted with the carbonyl function to afford the corresponding ring-closure reaction products containing a carbon nitrogen double bond. Thus, starting from beta,gamma- or gamma,delta-unsaturated esters, the corresponding cyclic imino ethers were obtained. These could not be isolated but were directly transformed into beta-(phenylseleno) gamma-lactams or gamma-(phenylseleno) delta-lactams. The phenylseleno derivatives of tetrahydropyridine were formed starting both from gamma,delta-unsaturated ketones and from alpha-allyl beta-keto esters. In the latter case, the cyclization reaction is chemoselective and involves the ketonic carbonyl. The oxidation of these compounds with hydrogen peroxide directly produced the corresponding pyridines via selenoxide elimination followed by dehydrogenation. This simple reaction sequence represents a very useful general method to build up a 2-substituted pyridine ring. Several alkyl-, aryl-, and heteroarylpyridines, bipyridines, and a terpyridine have been prepared.