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(2E,4E)-5-bromopenta-2,4-dienoic acid | 185619-60-7

中文名称
——
中文别名
——
英文名称
(2E,4E)-5-bromopenta-2,4-dienoic acid
英文别名
——
(2E,4E)-5-bromopenta-2,4-dienoic acid化学式
CAS
185619-60-7
化学式
C5H5BrO2
mdl
——
分子量
176.997
InChiKey
BUEDYQCVMGFPHF-ZPUQHVIOSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

计算性质

  • 辛醇/水分配系数(LogP):
    1.4
  • 重原子数:
    8
  • 可旋转键数:
    2
  • 环数:
    0.0
  • sp3杂化的碳原子比例:
    0.0
  • 拓扑面积:
    37.3
  • 氢给体数:
    1
  • 氢受体数:
    2

上下游信息

  • 上游原料
    中文名称 英文名称 CAS号 化学式 分子量

反应信息

点击查看最新优质反应信息

文献信息

  • A Stille approach to unsaturated amides derived from 2-amino-3-hydroxycyclopentenone: the synthesis of asuka-mABA and limocrocin
    作者:Gregor Macdonald、Norman J. Lewis、Richard J. K. Taylor
    DOI:10.1039/cc9960002647
    日期:——
    A Stille palladium-catalysed vinyl halide–vinyl stannane coupling approach to the title compounds is described.
    描述了一种Stille钯催化的乙烯卤化物–乙烯锡烷偶联方法,用于合成目标化合物。
  • Multiply Unsaturated and ω‐Brominated β‐Ketothioesters for Synthesizing β‐Ketolactams and the Scaffolds of Fully Enolized <i>N</i>‐Hydroxy‐3‐(polyenoyl)pyridine‐2,4‐dione Natural Products
    作者:Julia Kopp、Reinhard Brückner
    DOI:10.1002/ejoc.202301001
    日期:2024.1.22
    Abstract

    Fully enolized N‐hydroxypyridine‐2,4‐diones with a 3‐enoyl or 3‐dienoyl or 3‐trienoyl substituent (collectively named “3‐polyenoyl substituent“ hereafter) define the core of a number of δ‐lactam natural products. We developed a strategy for establishing such motifs in a convergent and stereoselective manner. The polyenoyl moiety of our target molecules stemmed from simply, two‐fold or three‐fold unsaturated and almost completely enolized ω‐bromo‐β‐ketothioesters, two of which were obtained for the first time. The N‐bound hydroxy group of our target structures originated from an O‐(2,4,6‐trimethoxybenzyl)‐protected β‐(hydroxylamino)propionic ester, first obtained in this study, too. The mentioned building blocks were combined intermolecularly by a thioester hydroxylaminolysis and thereafter intramolecularly by a Williams‐type Dieckmann cyclization. The resulting N‐(2,4,6‐trimethoxybenzyloxy)dihydropyridine‐2,4‐diones were oxidized with CBrCl3 and DBU. The N‐(2,4,6‐trimethoxybenzyloxy)pyridine‐2,4‐diones gained thereby were debenzylated – jointly with their (4‐methoxybenzyl) aryl ether moiety – with F3CCO2H. This liberated the target structures.

    摘要具有 3-烯酰基、3-二烯酰基或 3-三烯酰基取代基(以下统称为 "3-聚烯酰基取代基")的完全烯醇化 N-羟基吡啶-2,4-二酮定义了许多 δ-内酰胺天然产物的核心。我们开发了一种以趋同和立体选择性方式建立此类基团的策略。我们的目标分子中的聚烯酰基来自于简单、两倍或三倍不饱和且几乎完全烯醇化的ω-溴-β-硫酮酯,其中有两种是首次获得的。我们的目标结构的 N 键羟基来自 O-(2,4,6-三甲氧基苄基)保护的 β-(羟基氨基)丙酸酯,这也是本研究首次获得。上述结构单元通过硫代酯类羟基氨基化反应在分子间结合,然后通过威廉姆斯式迪克曼环化反应在分子内结合。生成的 N-(2,4,6-三甲氧基苄氧基)二氢吡啶-2,4-二酮被 CBrCl3 和 DBU 氧化。由此得到的 N-(2,4,6-三甲氧基苄氧基)吡啶-2,4-二酮与它们的(4-甲氧基苄基)芳基醚分子一起用 F3CCO2H 进行脱苄基反应。这样就得到了目标结构。
  • Unsaturated amides derived from 2-amino-3-hydroxycyclopentenone: A stille approach to the synthesis of asuka-mABA, 2880-II, and limocrocin
    作者:Gregor Macdonald、Lilian Alcaraz、Xudong Wei、Norman J Lewis、Richard J.K Taylor
    DOI:10.1016/s0040-4020(98)00536-5
    日期:1998.8
    A Stille palladium catalysed vinyl halide-vinyl stannane or aryl stannane coupling approach to the title compounds is described. The 2-aminocyclopentanedione-derived vinyl bromides (12, n = 1, 2, 3) were prepared and coupled to synthesise 2880-II (4), a Streptomyces metabolite, asuka-mABA (6), obtained during investigations to elucidate the biogenesis of the antibiotic asukamycin, and limocrocin (10), a naturally occurring antibiotic and antiviral agent. (C) 1998 Elsevier Science Ltd. All rights reserved.
  • The Synthesis of Alisamycin, Nisamycin, LL-C10037α and Novel Epoxyquinol and Epoxyquinone Analogues of Manumycin A
    作者:Richard J. K. Taylor、Lilian Alcaraz、Isabelle Kapfer-Eyer、Gregor Macdonald、Xudong Wei、Norman Lewis
    DOI:10.1055/s-1998-2064
    日期:1998.5
  • Stereoselective Synthesis of Dienyl-Carboxylate Building Blocks: Formal Synthesis of Inthomycin C
    作者:Caroline Souris、Frédéric Frébault、Ashay Patel、Davide Audisio、K. N. Houk、Nuno Maulide
    DOI:10.1021/ol401226y
    日期:2013.7.5
    A direct synthesis of stereodefined halodienes is reported. Those key building blocks enable a concise access to polyenic products, as demonstrated in a modular synthesis of Inthomycin C.
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