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Updated: May 15, 2025

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通过激进推广的多米诺基-功能化/消芳性ipso-无效化来获得甲基-阿扎斯皮罗[4.5]decatrienones

Chada Raji Reddy1,2, Puthiya Purayil Vinaya1,2, Ejjirotu Srinivasu1

  • 1Department of Organic Synthesis & Process Chemistry CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India.

The Journal of organic chemistry
|April 9, 2025
PubMed
概括

一种新的方法可以通过基因介导反应合成独特的3-硫烯酸阿扎-螺旋环. 这种方法也产生了3-thiocyano aza-spirocycles,扩大了合成可能性.

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The Diels–Alder reaction is an example of a thermal pericyclic reaction between a conjugated diene and an alkene or alkyne, commonly referred to as a dienophile. The reaction involves a concerted movement of six π electrons, four from the diene and two from the dienophile, forming an unsaturated six-membered ring. As a result, these reactions are classified as [4+2] cycloadditions.
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The Diels–Alder reaction brings together a diene and a dienophile to form a six-membered ring. Both components have unique characteristics that influence the rate of the reaction.
Characteristics of the diene
Conformation
The simplest example of a diene is 1,3-butadiene, an acyclic conjugated π system. At room temperature, the molecule exists as a mixture of s-cis and s-trans conformers by virtue of rotation around the carbon–carbon single bond. Although the s-trans isomer is...
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Stereochemistry is the study of the different spatial arrangements of atoms in a given molecule. The stereochemistry of radical halogenations can be understood from three different situations:
Halogenation to form a new chiral center:
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Radicals, the highly reactive species, gain stability by undergoing three different reactions. The first reaction involves a radical-radical coupling, in which a radical combines with another radical, forming a spin‐paired molecule. The second reaction is between a radical and a spin‐paired molecule, generating a new radical and a new spin‐paired molecule. The third reaction is radical decomposition in a unimolecular reaction, forming a new radical and a spin‐paired...
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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.
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