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関連する概念動画

Diels–Alder Reaction Forming Bridged Bicyclic Products: Stereochemistry01:29

Diels–Alder Reaction Forming Bridged Bicyclic Products: Stereochemistry

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Diels–Alder reactions between cyclic dienes locked in an s-cis configuration and dienophiles yield bridged bicyclic products.
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Five-Membered Heterocyclic Aromatic Compounds: Overview01:13

Five-Membered Heterocyclic Aromatic Compounds: Overview

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Heterocyclic aromatic compounds are cyclic compounds that are aromatic and have one or more heteroatoms—atoms other than carbon, in the ring. Depending upon the number of atoms present in the ring, they can be either five or six-membered. Examples of five-membered heterocyclic aromatic compounds include pyrrole, furan, thiophene, and imidazole. Pyrrole consists of one nitrogen atom having one lone pair of electrons. Furan and thiophene have one oxygen and one sulfur heteroatom,...
4.2K
Cycloaddition Reactions: Overview01:16

Cycloaddition Reactions: Overview

2.8K
Cycloadditions are one of the most valuable and effective synthesis routes to form cyclic compounds. These are concerted pericyclic reactions between two unsaturated compounds resulting in a cyclic product with two new σ bonds formed at the expense of π bonds. The [4 + 2] cycloaddition, known as the Diels–Alder reaction, is the most common. The other example is a [2 + 2] cycloaddition.
2.8K
Diels–Alder Reaction Forming Cyclic Products: Stereochemistry01:28

Diels–Alder Reaction Forming Cyclic Products: Stereochemistry

4.0K
The Diels–Alder reaction is one of the robust methods for synthesizing unsaturated six-membered rings. The reaction involves a concerted cyclic movement of six π electrons: four π electrons from the diene and two π electrons from the dienophile.
4.0K
Pericyclic Reactions: Introduction01:17

Pericyclic Reactions: Introduction

8.5K
Pericyclic reactions are organic reactions that occur via a concerted mechanism without generating any intermediates. The reactions proceed through the movement of electrons in a closed loop to form a cyclic transition state, where rearrangement of the σ and π bonds yields specific products.
Pericyclic reactions can be classified into three categories: electrocyclic reactions, cycloaddition reactions, and sigmatropic rearrangements. Electrocyclic reactions and sigmatropic...
8.5K
Prochirality02:05

Prochirality

3.9K
The concept of prochirality leads to the nomenclature of the individual faces of a molecule and plays a crucial role in the enantioselective reaction. It is a concept where two or more achiral molecules react to produce chiral products. A typical process is the reaction of an achiral ketone to generate a chiral alcohol. Here, the achiral reactant reacts with an achiral reducing agent, sodium borohydride, to generate an equimolar mixture of the chiral enantiomers of the product. For example, an...
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関連する実験動画

Updated: Sep 9, 2025

Efficient Construction of Drug-like Bispirocyclic Scaffolds Via Organocatalytic Cycloadditions of &#945;-Imino &#947;-Lactones and Alkylidene Pyrazolones
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Efficient Construction of Drug-like Bispirocyclic Scaffolds Via Organocatalytic Cycloadditions of α-Imino γ-Lactones and Alkylidene Pyrazolones

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薬剤化学のためのヘテロスピロサイクルのアプローチ

Carlos Rodríguez-Arias1, Rubén Miguélez1, Yuliia Holota2,3

  • 1Departamento de Química Orgánica e Inorgánica and Instituto Universitario de Química Organometálica "Enrique Moles", Universidad de Oviedo, Julian Clavería 8, 33006 Oviedo, Spain.

Organic letters
|September 5, 2025
PubMed
まとめ

金 ((I) 触媒は,ブロモアルキンから新しいスピロヘテロサイクルを合成することを可能にします. 多様な機能群を備えた この多用途な化合物は 薬の発見において 価値ある構成要素として機能します

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Functionalized Spirocyclic Heterocycle Synthesis and Cytotoxicity Assay
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Functionalized Spirocyclic Heterocycle Synthesis and Cytotoxicity Assay

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Solid-phase Synthesis of [4.4] Spirocyclic Oximes
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Solid-phase Synthesis of [4.4] Spirocyclic Oximes

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関連する実験動画

Last Updated: Sep 9, 2025

Efficient Construction of Drug-like Bispirocyclic Scaffolds Via Organocatalytic Cycloadditions of &#945;-Imino &#947;-Lactones and Alkylidene Pyrazolones
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Efficient Construction of Drug-like Bispirocyclic Scaffolds Via Organocatalytic Cycloadditions of α-Imino γ-Lactones and Alkylidene Pyrazolones

Published on: February 7, 2019

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Functionalized Spirocyclic Heterocycle Synthesis and Cytotoxicity Assay
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Functionalized Spirocyclic Heterocycle Synthesis and Cytotoxicity Assay

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Solid-phase Synthesis of [4.4] Spirocyclic Oximes
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Solid-phase Synthesis of [4.4] Spirocyclic Oximes

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科学分野:

  • 有機化学
  • カタリシス
  • 薬剤化学

背景:

  • 金の触媒は 有機合成の強力なツールです
  • スピロヘテロサイクルは,医薬品における重要な構造モチーフである.
  • アリファティックブロモアルキンは有用な合成前駆体である.

研究 の 目的:

  • ヘテロスピロサイクルの合成のための金で触媒化された方法を開発する.
  • 合成されたエスカフォードの誘導の可能性を調査する.
  • 薬の発見のための新しい構成要素を提供するためです

主な方法:

  • アリファティック1-ブロモアルキンの金 ((I) -触媒化されたサイクロイソメリゼーション.
  • 結果のスパイロヘテロサイクルにおけるC ((sp2) -Br結合の機能化.
  • 炭酸,アミン,ヒドロキシル,ボロナートエステルを含む様々な機能群の導入.

主要な成果:

  • 多様なヘテロスピロサイクルの効率的な合成
  • 追加の改変のためにC ((sp2) -Br結合の反応性の実証.
  • CO2H,NH2,OH,Bpin機能群で装飾されたスパイロヘロサイクルへのアクセス.

結論:

  • 開発された方法は,機能化されたスピロヘロサイクルへの簡単な経路を提供します.
  • 合成された化合物は 薬の発見に役立つ中介物質です
  • このアプローチは,複雑な分子構造を構築する際に金触媒の有用性を拡大します.