An efficient one-pot oxidative esterification of aldehydes to carboxylic esters using B(C6F5)3–TBHP

Activation-Free Sulfonyl Fluoride Probes for Fragment Screening

SuFEx chemistry is based on the unique reactivity of the sulfonyl fluoride group with a range of nucleophiles. Accordingly, sulfonyl fluorides label multiple nucleophilic amino acid residues, making these reagents popular in both chemical biology and medicinal chemistry applications. The reactivity of sulfonyl fluorides nominates this warhead chemotype as a candidate for an external, activation-free general labelling tag. Here, we report the synthesis and characterization of a small sulfonyl fluoride library that yielded the 3-carboxybenzenesulfonyl fluoride warhead for tagging tractable targets at nucleophilic residues. Based on these results, we propose that coupling diverse fragments to this warhead would result in a library of sulfonyl fluoride bits (SuFBits), available for screening against protein targets. SuFBits will label the target if it binds to the core fragment, which facilitates the identification of weak fragments by mass spectrometry.

Cobalt-catalyzed direct transformation of aldehydes to esters: the crucial role of an enone as a mediator

An oxidative esterification of aldehydes with alkanols catalyzed by an in situ generated low-valent cobalt system has been developed using an enone as a mild oxidant.

Aerobic oxidative esterification and thioesterification of aldehydes using dibromoisocyanuric acid under mild conditions: no metal catalysts required

Esters and thioesters were successfully prepared through oxidative esterification and thioesterification of corresponding aldehydes in the presence of dibromoisocyanuric acid.

An efficient and mild oxidative amidation of aldehydes using B(C6F5)3 as a catalyst and biological evaluation of the products as potential antimicrobial agents

A mild and efficient protocol for oxidative amidation of diverse aldehydes with amines was developed to generate the corresponding amides in good to excellent yields.

Amberlyst-15 catalysed oxidative esterification of aldehydes using a H2O2 trapped oxidant as a terminal oxidant

A simple and efficient method has been developed for the selective oxidative esterification of aldehydes using commercially available Amberlyst-15 as a catalyst.

B(C6F5)3 catalysed reduction of para-quinone methides and fuchsones to access unsymmetrical diaryl- and triarylmethanes: elaboration to beclobrate

An effective method for the synthesis of diaryl- and triarylmethane derivatives through a Lewis acid catalyzed reduction of para-quinone methides and fuchsones, respectively, using the Hantzsch ester as a hydride surrogate is described.

B(C6F5)3 catalysed 1,6-conjugate allylation of para-quinone methides: expedient access to allyl diarylmethanes

An efficient protocol for the synthesis of unsymmetrical allyl diarylmethanes through a Lewis acid catalysed 1,6-conjugate addition of allylsilanes to para-quinone methides is described.

Magnetic Co3O4/reduced graphene oxide nanocomposite as a superior heterogeneous catalyst for one-pot oxidative esterification of aldehydes to methyl esters

Magnetic Co₃O₄/reduced graphene oxide nanocomposite as a superior heterogeneous catalyst for one-pot oxidative esterification of aldehydes to methyl esters.