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Radical Oxidation of Allylic and Benzylic Alcohols01:21

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Activated manganese(IV) oxide can selectively oxidize allylic and benzylic alcohols via a radical intermediate mechanism. Primary allylic alcohols are oxidized to aldehydes, while secondary allylic alcohols yield ketones. The redox reaction of potassium permanganate with an Mn(II) salt such as manganese sulfate (under either alkaline or acidic conditions), followed by thorough drying, yields the oxidizing agent: activated MnO2. While MnO2 is insoluble in the solvents used for the reaction, the...
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Recently, the development of olefin metathesis polymerization advanced the field of polymer synthesis. Simply put, the reorganization of substituents on their double bonds between two olefins in the presence of a catalyst is known as the olefin metathesis reaction. The use of metathesis reaction for polymer synthesis is called olefin metathesis polymerization.
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Ring-opening metathesis polymerization or ROMP involves strained cycloalkenes as starting materials. The mechanism of ROMP proceeds by reacting cycloalkene with Grubbs catalyst to give metallacyclobutane intermediate which undergoes a ring-opening reaction to form new carbene. The new carbene reacts with another molecule of cycloalkene. Repetition of these steps leads to the formation of an unsaturated open-chain polymer product. All these steps are reversible, however, relieving the ring...
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Alkenes can be dihydroxylated using potassium permanganate. The method encompasses the reaction of an alkene with a cold, dilute solution of potassium permanganate under basic conditions to form a cis-diol along with a brown precipitate of manganese dioxide.
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α-Substituted ketones or aldehydes can be synthesized from enamines by the Stork enamine reaction, named after its pioneer Gilbert Stork. Enamines are useful synthetic intermediates where the lone pair on nitrogen is in conjugation with the C=C bond. They resemble enolate ions, as the resonance forms of both species have a nucleophilic α carbon.
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Properties of Organometallic Compounds01:23

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Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
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Precursor-Modulated Synthesis Enables a Stable and Activatable Mn(III) Formate With the ReO3-Type Topology.

Rajesh Das1, Zeyu Deng2, Dan Zhao1

  • 1Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore.

Small (Weinheim an Der Bergstrasse, Germany)
|May 3, 2026
PubMed
Summary
This summary is machine-generated.

Researchers developed a stable manganese formate metal-organic framework (MOF) for efficient CO2 capture. This breakthrough expands MOF applications in gas storage and catalysis.

Keywords:
ALFbiogascarbon captureflue Gasmetal–organic frameworks

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Area of Science:

  • Materials Science
  • Chemistry

Background:

  • ReO3-type metal-organic frameworks (MOFs) show promise for gas separation and storage.
  • Activation of M(III)-formate MOFs is challenging, with aluminum formate (ALF) being the only readily activatable example.
  • Manganese formate (Mn(HCOO)3) has been unstable and difficult to activate.

Purpose of the Study:

  • To develop a stable and activatable phase of manganese formate (Mn(HCOO)3).
  • To evaluate the gas adsorption performance of activated Mn(HCOO)3 for CO2 capture.
  • To broaden the family of M(III)-formate MOFs and explore new applications.

Main Methods:

  • Streamlined synthesis of manganese formate (Mn(HCOO)3).
  • Activation of the synthesized Mn(HCOO)3.
  • Gas adsorption measurements, focusing on CO2 capture.

Main Results:

  • A stable, activatable phase of Mn(HCOO)3 was successfully synthesized.
  • Activated Mn(HCOO)3 demonstrated good thermal stability.
  • The material exhibited excellent CO2 adsorption performance, comparable to ALF.

Conclusions:

  • The work presents a stable, earth-abundant transition metal formate MOF.
  • This stabilized Mn(HCOO)3 broadens the scope of M(III)-formate MOFs.
  • The findings pave the way for applications in gas storage, separation, catalysis, and spin-based technologies.