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Updated: Jul 20, 2026

Efficient Synthesis of All-Carbon Quaternary Centers via the Conjugate Addition of Functionalized Monoorganozinc Bromides
Published on: May 26, 2019
Tetrabromo hydrogenated cardanol: Efficient and renewable brominating agent.
Orazio A Attanasi1, Stefano Berretta, Gianfranco Favi
1Centro di Sudio delle Sostanze Organiche di Origine Naturale, Università di Urbino Carlo Bo, Via Sasso 75, 61029 Urbino, Italy. attanasi@uniurb.it
A novel brominating agent, 2,4,4,6-Tetrabromo-3-n-pentadecyl-2,5-cyclohexadienone (TBPCO), has been synthesized. This compound offers an efficient, convenient, and environmentally friendly method for bromination reactions.
Area of Science:
- Organic Chemistry
- Synthetic Chemistry
Background:
- Bromination reactions are fundamental in organic synthesis.
- Development of efficient and environmentally benign brominating agents is crucial.
Purpose of the Study:
- To synthesize and evaluate 2,4,4,6-Tetrabromo-3-n-pentadecyl-2,5-cyclohexadienone (TBPCO) as a novel brominating agent.
Main Methods:
- Synthesis of TBPCO.
- Application of TBPCO in bromination reactions (details of specific reactions and conditions would typically be here).
Main Results:
- Successful synthesis of TBPCO.
- Demonstration of TBPCO as an efficient brominating agent.
- Highlighting the convenient and environmentally friendly nature of TBPCO.
Conclusions:
- TBPCO is a viable and advantageous new reagent for bromination.
- The developed method offers improvements in efficiency and environmental impact over existing agents.
Related Concept Videos
Halogenation of Alkenes
Consider the bromination of cyclopentene. Molecular bromine is polarized in the proximity of the π electrons of cyclopentene. An electrophilic bromine atom adds across the double bond, forming a cyclic bromonium ion intermediate.
Formation of Halohydrin from Alkenes
Regioselectivity of Electrophilic Additions-Peroxide Effect
Radical Substitution: Allylic Bromination
Electrophilic 1,2- and 1,4-Addition of HX to 1,3-Butadiene
Reactions at the Benzylic Position: Halogenation

