50790-32-4

Upstream product

• 455-14-1 4-trifluoromethylphenylamine 
• 124-63-0 methanesulfonyl chloride 
• 3144-09-0 methanesulfonamide 
• 402-43-7 p-trifluoromethylphenyl bromide 
• 98-56-6 4-chlorobenzotrifluoride 
• 128796-39-4 4-trifluoromethylphenylboronic acid 
• 624-90-8 Methanesulfonyl azide 

Downstream Products

• 100846-24-0 5-trifluoromethyl-1H-indole 
• 300561-23-3 N-benzyloxycarbonyl-N-(4-trifluoromethylphenyl)methanesulfonamide 

Relevant academic research and scientific papers

Sulfoximines from a Medicinal Chemist's Perspective: Physicochemical and in vitro Parameters Relevant for Drug Discovery

Sulfoximines, sulfondiimides and sulfonimidamides are fascinating but not yet fully explored variants of the common sulfone or sulfonamide motif. In this study, we report the physicochemical and in vitro properties of sulfoximines and compare them with related analogs and isosteres. Furthermore, we present a matched molecular pair analysis of compounds from drug discovery projects within Boehringer Ingelheim. We demonstrate that the sulfoximine moiety is a chemically stable, comparatively polar and weakly basic functional group, often leading to favorable aqueous solubility, permeability and metabolic stability. Moreover, their additional vectors at nitrogen enable simple chemical modifications and thus facilitate exploration and fine-tuning of the molecular properties. We conclude that sulfoximines and their congeners do not exhibit any intrinsic flaw but significantly enrich the toolbox of medicinal chemists.

1,3,4-OXADIAZOLE SULFONAMIDE DERIVATIVE COMPOUNDS AS HISTONE DEACETYLASE 6 INHIBITOR, AND THE PHARMACEUTICAL COMPOSITION COMPRISING THE SAME

The present invention relates to novel compounds represented by the formula I having histone deacetylase 6 (HDAC6) inhibitory activity, stereoisomers thereof or pharmaceutically acceptable salts thereof, the use thereof for the preparation of therapeutic medicaments, pharmaceutical compositions containing the same, a method for treating diseases using the composition, and methods for preparing the novel compounds. (I) The novel compounds, stereoisomers thereof or pharmaceutically acceptable salts thereof according to the present invention have histone deacetylase (HDAC) inhibitory activity and are effective for the prevention or treatment of HDAC6-mediated diseases.

Palladium-Catalyzed, Ring-Forming Aromatic C-H Alkylations with Unactivated Alkyl Halides

A catalytic C-H alkylation using unactivated alkyl halides and a variety of arenes and heteroarenes is described. This ring-forming process is successful with a variety of unactivated primary and secondary alkyl halides, including those with β-hydrogens. In contrast to standard polar or radical cyclizations of aromatic systems, electronic activation of the substrate is not required. The mild, catalytic reaction conditions are highly functional group tolerant and facilitate access to a diverse range of synthetically and medicinally important carbocyclic and heterocyclic systems.

Copper-catalyzed Chan-Lam Coupling between Sulfonyl Azides and Boronic acids at room temperature

A mild and efficient method for the synthesis of N-arylsulfonamides in the presence of 10 mol % of CuCl is demonstrated. The reaction proceeds readily at room temperature in an open flask using a variety of sulfonyl azides and boronic acids without any base, ligand, or additive.

BippyPhos: A single ligand with unprecedented scope in the Buchwald-Hartwig amination of (hetero)aryl chlorides

Over the past two decades, considerable attention has been given to the development of new ligands for the palladium-catalyzed arylation of amines and related NH-containing substrates (i.e., Buchwald-Hartwig amination). The generation of structurally diverse ligands, by research groups in both academia and industry, has facilitated the accommodation of sterically and electronically divergent substrates including ammonia, hydrazine, amines, amides, and NH heterocycles. Despite these achievements, problems with catalyst generality persist and access to multiple ligands is necessary to accommodate all of these NH-containing substrates. In our quest to address this significant limitation we identified the BippyPhos/[Pd(cinnamyl)Cl]2 catalyst system as being capable of catalyzing the amination of a variety of functionalized (hetero)aryl chlorides, as well as bromides and tosylates, at moderate to low catalyst loadings. The successful transformations described herein include primary and secondary amines, NH heterocycles, amides, ammonia and hydrazine, thus demonstrating the largest scope in the NH-containing coupling partner reported for a single Pd/ligand catalyst system. We also established BippyPhos/ [Pd(cinnamyl)Cl]2 as exhibiting the broadest demonstrated substrate scope for metal-catalyzed cross-coupling of (hetero)aryl chlorides with NH indoles. Furthermore, the remarkable ability of BippyPhos/[Pd(cinnamyl)Cl] 2 to catalyze both the selective monoarylation of ammonia and the N-arylation of indoles was exploited in the development of a new one-pot, two-step synthesis of N-aryl heterocycles from ammonia, ortho- alkynylhalo(hetero)arenes and (hetero) aryl halides through tandem N-arylation/hydroamination reactions. Although the scope in the NH-containing coupling partner is broad, BippyPhos/[Pd(cinnamyl)Cl]2 also displays a marked selectivity profile that was exploited in the chemoselective monoarylation of substrates featuring two chemically distinct NH-containing moieties.

Mild Pd-catalyzed N -arylation of methanesulfonamide and related nucleophiles: Avoiding potentially genotoxic reagents and byproducts

A convenient, general, and high yielding Pd-catalyzed cross-coupling of methanesulfonamide with aryl bromides and chlorides is reported. The use of this method eliminates concern over genotoxic impurities that can arise when an aniline is reacted with methanesulfonyl chloride. The application of this method to the synthesis of dofetilide is also reported.

Microwave-induced rapid access to aromatic and heteroaromatic sulfonamides under solvent-free conditions without using external base

Microwave-induced syntheses of sulfonamides, without using base under solvent-free conditions, have been developed. The process finds its utility because of its simple operational procedure and high yields. Moreover, the process is fast and accommodative to different substituents on aromatic as well as heteroaromatic rings rendering sulfonamides (28 examples).

Studies on development of sufficiently chemoselective N-acylation reagents: N-Acyl-N-(2,3,4,5,6-pentafluorophenyl)methanesulfonamides

A variety of storable N-acyl-N-(2,3,4,5,6-pentafluorophenyl)methanesulfonamides (4a-e) prepared from N-2,3,4,5,6-pentafluorophenylmethanesulfonamide (3), have been developed after systematic research on the structure-reactivity relationship and were found to serve as N-acylation reagents exhibiting sufficiently good chemoselectivity. (C) 2000 Elsevier Science Ltd.

Novel and selective 5-HT(2C/2B) receptor antagonists as potential anxiolytic agents: Synthesis, quantitative structure - Activity relationships, and molecular modeling of substituted 1-(3- pyridylcarbamoyl)indolines

The synthesis, biological activity, and molecular modeling of a novel series of substituted 1-(3-pyridylcarbamoyl)indolines are reported. These compounds are isosteres of the previously published indole urea 1 (SB- 206553) and illustrate the use of aromatic disubstitution as a replacement for fused five-membered rings in the context of 5-HT(2C/2B) receptor antagonists. By targeting a region of space previously identified as sterically allowed at the 5-HT(2C) receptor but disallowed at the 5-HT(2A) receptor, we have identified a number of compounds which are the most potent and selective 5-HT(2C/2B) receptor antagonists yet reported. 46 (SB-221284) was selected on the basis of its overall biological profile for further evaluation as a novel, potential nonsedating anxiolytic agent. A CoMFA analysis of these compounds produced a model with good predictive value and in addition good qualitative agreement with both our 5-HT(2C) receptor model and our proposed binding mode for this class of ligands within that model.

Substituent effects in infrared spectroscopy-VII. Meta and para substituted methanesulphonanilides

Substituent effects on the NH frequencies of the conformers of methanesulphonanilides, their cyclic dimers and their hydrogen bonded complexes with acetonitrile have been analysed by means of the Hammet equation.An electron-withdrawing substituent may either increase or decrease ν(NH) in the XC6H4NHY series according to the electronic nature of the Y group.This can be explained by the non-monotonic dependence of the NH stretching frequency on the ionic character of the NH bond.