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Properties of Organometallic Compounds

Properties of Organometallic Compounds

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.

Radical Substitution: Allylic Bromination

Radical Substitution: Allylic Bromination

In organic synthesis, the formation of products can be altered by changing the reaction conditions. For example, a dibromo addition product is formed when propene is treated with bromine at room temperature. In contrast, propene undergoes allylic substitution in non-polar solvents at high temperatures to give 3-bromopropene. In order to avoid the addition reaction, the bromine concentration must be kept as low as possible throughout the reaction. This can be achieved using N-bromosuccinimide...

Regioselectivity and Stereochemistry of Hydroboration

Regioselectivity and Stereochemistry of Hydroboration

A significant aspect of hydroboration–oxidation is the regio- and stereochemical outcome of the reaction.
Hydroboration proceeds in a concerted fashion with the attack of borane on the π bond, giving a cyclic four-centered transition state. The –BH2 group is bonded to the less substituted carbon and –H to the more substituted carbon. The concerted nature requires the simultaneous addition of –H and –BH2 across the same face of the alkene giving syn...

Hydroboration-Oxidation of Alkenes

Hydroboration-Oxidation of Alkenes

In addition to the oxymercuration–demercuration method, which converts the alkenes to alcohols with Markovnikov orientation, a complementary hydroboration-oxidation method yields the anti-Markovnikov product. The hydroboration reaction, discovered in 1959 by H.C. Brown, involves the addition of a B–H bond of borane to an alkene giving an organoborane intermediate. The oxidation of this intermediate with basic hydrogen peroxide forms an alcohol.

Alkynes to Aldehydes and Ketones: Hydroboration-Oxidation

Alkynes to Aldehydes and Ketones: Hydroboration-Oxidation

Introduction
One of the convenient methods for the preparation of aldehydes and ketones is via hydration of alkynes. Hydroboration-oxidation of alkynes is an indirect hydration reaction in which an alkyne is treated with borane followed by oxidation with alkaline peroxide to form an enol that rapidly converts into an aldehyde or a ketone. Terminal alkynes form aldehydes, whereas internal alkynes give ketones as the final product.

Electrophilic 1,2- and 1,4-Addition of HX to 1,3-Butadiene

Electrophilic 1,2- and 1,4-Addition of HX to 1,3-Butadiene

The electrophilic addition of hydrogen halides such as HBr to alkenes and nonconjugated dienes gives a single product as per Markovnikov’s rule.

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Related Experiment Video

Updated: Jul 5, 2025

Synthesis of a Borylated Ibuprofen Derivative Through Suzuki Cross-Coupling and Alkene Boracarboxylation Reactions

Synthesis of a Borylated Ibuprofen Derivative Through Suzuki Cross-Coupling and Alkene Boracarboxylation Reactions

Published on: November 30, 2022

Recent progress in beryllium organometallic chemistry.

Darakshan Parveen¹, Rahul Kumar Yadav¹, Dipak Kumar Roy¹

¹Department of Chemistry, Indian Institute of Technology Indore, Madhya Pradesh, 453552, India. dipak.roy@iiti.ac.in.

Chemical Communications (Cambridge, England)

|January 23, 2024

Summary

Despite toxicity, advances in ligands and N-heterocyclic carbenes have revived beryllium chemistry. Recent progress includes low oxidation states, π-delocalized systems, and Be-Be bonds.

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Synthesis of a Borylated Ibuprofen Derivative Through Suzuki Cross-Coupling and Alkene Boracarboxylation Reactions

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Area of Science:

Inorganic Chemistry
Organometallic Chemistry
Materials Science

Background:

Beryllium's unique properties, including electronegativity, are valuable in industry.
Beryllium's high toxicity limits chemical exploration, making it understudied.
Recent advances in ligand design and N-heterocyclic carbenes have renewed interest in beryllium chemistry.

Purpose of the Study:

To provide an overview of recent advancements in beryllium's organometallic chemistry.
To highlight novel beryllium compounds and bonding.

Main Methods:

Review of recent literature on beryllium coordination and organometallic chemistry.
Focus on developments enabled by new synthetic strategies.

Main Results:

Achieved low oxidation state beryllium compounds.
Synthesized antiaromatic and aromatic beryllium compounds with π-electron delocalization.
Isolated beryllium-beryllium bonded species.

Conclusions:

Significant progress has been made in beryllium chemistry over the last two decades.
Novel beryllium compounds with unique electronic properties have been realized.
Further exploration of beryllium's chemical potential is warranted.