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Updated: May 27, 2025

Photogeneration of N-Heterocyclic Carbenes: Application in Photoinduced Ring-Opening Metathesis Polymerization
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Published on: November 29, 2018

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光敏感的阿尔基因的Imino-Thiocyanation的形成

Cong Huang1, Zhen-Zhen Xie1, Jie Gao1

  • 1College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.

Organic letters
|February 17, 2025
PubMed
概括

一种新的无金属方法使得olefins的光敏化1,2-imino-thiocyanation成为可能. 这种高效的反应从多种不同的原料中产生有价值的β-氨基基酸盐.

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Synthesis of Hypervalent Iodonium Alkynyl Triflates for the Application of Generating Cyanocarbenes12:27

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Some cycloaddition reactions are activated by heat, while others are initiated by light. For example, a [2 + 2] cycloaddition between two ethylene molecules occurs only in the presence of light. It is photochemically allowed but thermally forbidden.
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Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.
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The radical dimerization of ketones or aldehydes gives vicinal diols through a pinacol coupling reaction. However, the behavior of titanium metals used for the reaction as a source of electrons is unusual. When the reaction is carried out in the presence of titanium, diols can be isolated at low temperatures. Else titanium further reacts with diols, forming alkenes through the McMurry reaction.
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