Ce[N(SiMe3)2]3(THF)3-catal yzed hydroboration of CO2, esters and epoxides with pinacolborane: selective synthesis of methanol in multigram scale

TitleCe[N(SiMe3)2]3(THF)3-catal yzed hydroboration of CO2, esters and epoxides with pinacolborane: selective synthesis of methanol in multigram scale
Publication TypeJournal Article
Year of Publication2025
AuthorsHossain, MJabed, Shah, BKumar, Dash, SRanjan, Vanka, K, Khan, S
JournalChemistry-A European Journal
Volume31
Issue13
Date PublishedMAR
Type of ArticleArticle
ISSN0947-6539
KeywordsCerium, CO2 reduction, Epoxide, Ester, Hydroboration, Lanthanides
Abstract

In this work, we have reduced CO2 with HBpin to afford borylated methanol product selectively in similar to 99 % yield using Ce[N(SiMe3)(2)](3)(THF)(3) as a catalyst. This led to multigram scale isolation of methanol obtained from CO2 reduction via the hydrolysis of borylated methanol, this establishes the potential of Ce[N(SiMe3)(2)](3)(THF)(3) as an efficient homogeneous catalyst for the bulk scale methanol synthesis. A practical application of this catalytic system was also shown by reducing CO2-containing motorbike exhaust efficiently and selectively. Further, C-O bond activation of esters and epoxides using HBpin and 1-2 mol % of Ce[N(SiMe3)(2)](3)(THF)(3) at 60 degrees C afforded the borylated alcohols in good to excellent yields, which can easily be hydrolysed to the eco-friendly corresponding alcohol. The stoichiometric experiments were performed to prove the formation of in-situ generated cerium hydride [Ce]-H as an active catalyst.

DOI10.1002/chem.202403449
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

3.9

Divison category: 
Physical and Materials Chemistry
Database: 
Web of Science (WoS)

Add new comment