Diboron-Enabled Nickel-Catalyzed Reductive Hydroperfluoroalkylation toward β-Perfluoroalkyl Carbonyls
Lili Zhao1, Chenyang Liu1, Jiaming Li1
1School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi330031, China.
Organic Letters
|August 14, 2026
Summary
A new nickel-catalyzed reaction enables the efficient hydroperfluoroalkylation of carbonyl compounds. This method provides a practical route to valuable fluorinated building blocks for drug discovery.
Area of Science:
- Organic Chemistry
- Medicinal Chemistry
- Catalysis
Background:
- Carbonyl compounds are essential in synthesizing drug-like molecules.
- Incorporating fluorine atoms can enhance molecular properties for medicinal applications.
- Hydroperfluoroalkylation is a key strategy for introducing fluorinated motifs.
Purpose of the Study:
- To develop a novel catalytic system for the reductive hydroperfluoroalkylation of unsaturated carbonyl compounds.
- To achieve high regioselectivity in the incorporation of perfluoroalkyl groups.
- To provide a practical method for synthesizing fluorinated building blocks.
Main Methods:
- Utilized a diboron-enabled Nickel (Ni) catalytic system.
- Employed mild reaction conditions for the hydroperfluoroalkylation process.
- Applied the protocol to various amides, ketones, and esters.
Main Results:
- Achieved unified and highly regioselective reductive hydroperfluoroalkylation.
- Successfully incorporated diverse perfluoroalkyl groups into the target molecules.
- Obtained β-perfluoroalkyl products in good to excellent yields.
Conclusions:
- The developed Ni-catalyzed system offers an efficient and practical method for hydroperfluoroalkylation.
- This protocol facilitates the synthesis of valuable fluorinated building blocks.
- The method is suitable for amides, ketones, and esters, expanding synthetic utility.
More Related Videos
Related Concept Videos
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
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.
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.
Alcohols from Carbonyl Compounds: Reduction
Reduction is a simple strategy to convert a carbonyl group to a hydroxyl group. The three major pathways to reduce carbonyls to alcohols are catalytic hydrogenation, hydride reduction, and borane reduction.
Catalytic hydrogenation is similar to the reduction of an alkene or alkyne by adding H2 across the pi bond in the presence of transition metal catalysts like Raney Ni, Pd–C, Pt, or Ru. Aldehydes and ketones can be reduced by this method, often under mild to moderate heat (25–100°C) and...
Catalytic hydrogenation is similar to the reduction of an alkene or alkyne by adding H2 across the pi bond in the presence of transition metal catalysts like Raney Ni, Pd–C, Pt, or Ru. Aldehydes and ketones can be reduced by this method, often under mild to moderate heat (25–100°C) and...
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 stereochemistry.
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 stereochemistry.
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
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.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation
Introduction
Like alkenes, alkynes can be reduced to alkanes in the presence of transition metal catalysts such as Pt, Pd, or Ni. The reaction involves two sequential syn additions of hydrogen via a cis-alkene intermediate.
Like alkenes, alkynes can be reduced to alkanes in the presence of transition metal catalysts such as Pt, Pd, or Ni. The reaction involves two sequential syn additions of hydrogen via a cis-alkene intermediate.


