N-hydroxy-5-methylhex-4-enamide

• 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: N-hydroxy-5-methylhex-4-enamide
• 化学式: C₇H₁₃NO₂
• 分子量: 143.186
• InChiKey: JOJNWMIEXAYIFR-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.9
• 重原子数：
  10
• 可旋转键数：
  3
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  49.3
• 氢给体数：
  2
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  N-hydroxy-5-methylhex-4-enamide 在 盐酸 、 bis[dichloro(pentamethylcyclopentadienyl)iridium(III)] 、 15-冠醚-5 、 sodium chloride 作用下， 以 二氯甲烷 、 水 为溶剂， 反应 2.5h， 生成 5-(2-chloropropan-2-yl)pyrrolidin-2-one
  参考文献：
  名称：

  Stereodefined Access to Lactams via Olefin Difunctionalization: Iridium Nitrenoids as a Motif of LUMO-Controlled Dipoles

  摘要：

  Reported herein is a general platform of a stereodefined access to gamma-lactams via Cp*Ir-catalyzed olefin difunctionalization, where in situ generated Ir-nitrenoid is utilized as a key motif of 1,3-dipoles to enable amido transfer in a syn-selective manner. Computational studies suggested that the stereodefined process can be attributed to the proposed working mode of concerted [3 + 2] cyclization. Frontier molecular orbital (FMO) analysis implied that a low-lying lowest unoccupied molecular orbital (LUMO) of the Ir-imido fragment engages in the olefin interaction. Mechanistic understanding on the nitrene transfer process led us to develop mild catalytic protocols of stereoselective difunctionalization of alkenyl dioxazolones to furnish alpha-(haloalkyl)- or (oxyalkyl)lactam products which are of high synthetic and medicinal utility. Product stereochemistry (threo and erythro) was found to be designated by the olefin geometry (E/Z) of substrates.

  DOI：

  10.1021/jacs.9b04317
• 作为产物：
  描述：

  5-甲基-4-己烯酸 在 N,N'-羰基二咪唑 、 盐酸羟胺 作用下， 以 四氢呋喃 为溶剂， 反应 17.0h， 以78%的产率得到N-hydroxy-5-methylhex-4-enamide
  参考文献：
  名称：

  Stereodefined Access to Lactams via Olefin Difunctionalization: Iridium Nitrenoids as a Motif of LUMO-Controlled Dipoles

  摘要：

  Reported herein is a general platform of a stereodefined access to gamma-lactams via Cp*Ir-catalyzed olefin difunctionalization, where in situ generated Ir-nitrenoid is utilized as a key motif of 1,3-dipoles to enable amido transfer in a syn-selective manner. Computational studies suggested that the stereodefined process can be attributed to the proposed working mode of concerted [3 + 2] cyclization. Frontier molecular orbital (FMO) analysis implied that a low-lying lowest unoccupied molecular orbital (LUMO) of the Ir-imido fragment engages in the olefin interaction. Mechanistic understanding on the nitrene transfer process led us to develop mild catalytic protocols of stereoselective difunctionalization of alkenyl dioxazolones to furnish alpha-(haloalkyl)- or (oxyalkyl)lactam products which are of high synthetic and medicinal utility. Product stereochemistry (threo and erythro) was found to be designated by the olefin geometry (E/Z) of substrates.

  DOI：

  10.1021/jacs.9b04317

文献信息

• Multienzymatic Synthesis of γ‐Lactam Building Blocks from Unsaturated Esters and Hydroxylamine
  作者：Christina Jäger、Martin Nieger、Kari Rissanen、Jan Deska

  DOI：10.1002/ejoc.202300288

  日期：2023.10.16

  hydroxylamidation with an oxidase/peroxidase-induced ene-type cyclization. This methodology provides a mild and scalable access to N-heterocyclic building blocks from basic γ,δ-unsaturated esters and aqueous hydroxylamine, and its utility is illustrated by the formal total synthesis of the tetracyclic alkaloid cephalotaxine.

  N-羟基-γ-内酰胺是通过将脂肪酶催化的羟酰胺化与氧化酶/过氧化物酶诱导的烯型环化相结合的酶促序列来生产的。该方法提供了从碱性γ,δ-不饱和酯和水性羟胺中温和且可扩展地获得N-杂环结构单元的方法，其实用性通过四环生物碱头孢噻嗪的正式全合成得到了说明。
• Aerobic C−N Bond Formation through Enzymatic Nitroso‐Ene‐Type Reactions**
  作者：Christina Jäger、Mona Haase、Katja Koschorreck、Vlada B. Urlacher、Jan Deska

  DOI：10.1002/anie.202213671

  日期：2023.2.6

  laccases participate in C−N bond-forming reactions through the generation of reactive nitroso intermediates from acylated hydroxylamines. The formal allylic C−H bond activation proceeds with air as the terminal oxidant and provides high yields both in intramolecular and intermolecular amination reactions through this unprecedented biocatalytic nitroso-ene-type reaction pathway.

  在一个令人兴奋的催化混杂案例中，过氧化物酶和漆酶通过酰化羟胺生成反应性亚硝基中间体参与 C-N 键形成反应。正式的烯丙基 C-H 键活化以空气作为末端氧化剂进行，并通过这种前所未有的生物催化亚硝基型反应途径在分子内和分子间胺化反应中提供高产率。
• Stereodefined Access to Lactams via Olefin Difunctionalization: Iridium Nitrenoids as a Motif of LUMO-Controlled Dipoles
  作者：Seung Youn Hong、Sukbok Chang

  DOI：10.1021/jacs.9b04317

  日期：2019.7.3

  Reported herein is a general platform of a stereodefined access to gamma-lactams via Cp*Ir-catalyzed olefin difunctionalization, where in situ generated Ir-nitrenoid is utilized as a key motif of 1,3-dipoles to enable amido transfer in a syn-selective manner. Computational studies suggested that the stereodefined process can be attributed to the proposed working mode of concerted [3 + 2] cyclization. Frontier molecular orbital (FMO) analysis implied that a low-lying lowest unoccupied molecular orbital (LUMO) of the Ir-imido fragment engages in the olefin interaction. Mechanistic understanding on the nitrene transfer process led us to develop mild catalytic protocols of stereoselective difunctionalization of alkenyl dioxazolones to furnish alpha-(haloalkyl)- or (oxyalkyl)lactam products which are of high synthetic and medicinal utility. Product stereochemistry (threo and erythro) was found to be designated by the olefin geometry (E/Z) of substrates.