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Updated: May 26, 2025

Efficient Synthesis of All-Carbon Quaternary Centers via the Conjugate Addition of Functionalized Monoorganozinc Bromides
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Published on: May 26, 2019

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碳基因的高效水化,由基复合物支持的灵活的amidophosphinochalcogenide连接体

Kulsum Bano1, Ravi Kumar1, Archana Jain2

  • 1Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi 502 284, Sangareddy, Telangana, India. tpanda@chy.iith.ac.in.

Organic & biomolecular chemistry
|February 24, 2025
PubMed
概括

合成和表征了两种新的基复合物. 复合物2a在温和条件下表现出优异的催化活性,用于化和的化.

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The rate of acid-catalyzed hydration of alkenes depends on the alkene's structure, as the presence of alkyl substituents at the double bond can significantly influence the rate.
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Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
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Electrophilic addition of hydrogen halides, HX (X = Cl, Br or I) to alkenes forms alkyl halides as per Markovnikov's rule, where the hydrogen gets added to the less substituted carbon of the double bond. Hydrohalogenation of alkynes takes place in a similar manner, with the first addition of HX forming a vinyl halide and the second giving a geminal dihalide.
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Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
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