244246-95-5

Upstream product

• 463-71-8 thiophosgene 
• 54060-30-9 3-acetylenephenylamine 
• 1414781-33-1 C₉H₇NS₂*C₆H₁₂N₂ 

Downstream Products

• 1351624-75-3 N₃,N₅-bis(3-ethynylphenyl)-1H-pyrazole-3,5-diamine 
• 1351624-64-0 N-(4-(5-(3-ethynylphenylamino)-1H-pyrazol-3-ylamino)phenyl)acetamide 
• 1351624-59-3 N,N'-(4,4'-(1H-pyrazole-3,5-diyl)bis(azanediyl)bis(4,1-phenylene))diacetamide 
• 1370794-67-4 N-(3-ethynylphenyl)-¹⁵N'-hexylcarbodiimide 
• 1350545-11-7 8-(3-ethynylphenylamino)-9-cyclopentyl-2-(4-(4-methylpiperazin-1-yl)phenylamino)-9H-purine 
• 1350544-76-1 8-(3-ethynylphenylamino)-9-isopropyl-2-(4-(4-methylpiperazin-1-yl)phenylamino)-9H-purine 

Relevant academic research and scientific papers

Na2S2O8-mediated efficient synthesis of isothiocyanates from primary amines in water

We have developed two green, practical, and efficient procedures, including a one-pot one, to synthesize isothiocyanates from amines and carbon disulfide via desulfurization with sodium persulfate. Water is used as the solvent. Basic conditions are necessary for good chemoselectivity for isothiocyanates. Structurally diverse linear and branched alkyl amines and aryl amines are readily converted to isothiocyanates by the two procedures in satisfactory yields. Halogens, benzylic C-H bonds, methylthio, nitro, ester, alkenyl, electron-rich or -deficient (hetero)aryls, acetylenyl, and even phenolic and alcoholic hydroxyls are well tolerated. The one-pot procedure in water can also be used to realize the preparation of chiral isothiocyanates from chiral amines, and the modification of bioactive structures with free amino groups. In large-scale preparation, simple and practical purification procedures independent of column chromatography are developed.

Synthesis of Isothiocyanates and Unsymmetrical Thioureas with the Bench-Stable Solid Reagent (Me4N)SCF3

A highly efficient, selective, and rapid transformation of primary amines and diamines to isothiocyanates and cyclic thioureas is disclosed. As opposed to established approaches that employ toxic or volatile electrophilic liquids and require reaction control (i.e., slow addition, cooling), this protocol utilizes the bench-stable, solid reagent (Me4N)SCF3 at room temperature. The method is characterized by operational simplicity, high speed, efficiency, high functional group tolerance, and late-stage applicability. The byproducts are solids, allowing isolation of the target compounds by filtration.

Structural optimization and structure-activity relationships of N 2-(4-(4-methylpiperazin-1-yl)phenyl)- N 8-phenyl-9 H -purine-2,8-diamine derivatives, a new class of reversible kinase inhibitors targeting both EGFR-activating and resistance mutations

This paper describe the structural optimization of a hit compound, N 2-(4-(4-methylpiperazin-1-yl)phenyl)-N8-phenyl-9H-purine- 2,8-diamine (1), which is a reversible kinase inhibitor targeting both EGFR-activating and drug-resistance (T790M) mutations but has poor binding affinity. Structure-activity relationship studies led to the identification of 9-cyclopentyl-N2-(4-(4-methylpiperazin-1-yl)phenyl)-N 8-phenyl-9H-purine-2,8-diamine (9e) that exhibits significant in vitro antitumor potency against the non-small-cell lung cancer (NSCLC) cell lines HCC827 and H1975, which harbor EGFR-activating and drug-resistance mutations, respectively. Compound 9e was further assessed for potency and selectivity in enzymatic assays and in vivo anti-NSCLC studies. The results indicated that compound 9e is a highly potent kinase inhibitor against both EGFR-activating and resistance mutations and has good kinase spectrum selectivity across the kinome. In vivo, oral administration of compound 9e at a dose of 5 mg/kg caused rapid and complete tumor regression in a HCC827 xenograft model, and an oral dose of 50 mg/kg initiated a considerable antitumor effect in an H1975 xenograft model.

Determining the regioregularity in alkyne polycarbodiimides and their orthogonal modification of side chains to yield perfectly alternating functional polymers

To understand the structure-property relationship in functional macromolecules through side chain modulation, both the accurate determination of the position of modifiable groups along the polymer chain and their subsequent modifications using high fideli

Determining the regioregularity in alkyne polycarbodiimides and their orthogonal modification of side chains to yield perfectly alternating functional polymers

To understand the structure-property relationship in functional macromolecules through side chain modulation, both the accurate determination of the position of modifiable groups along the polymer chain and their subsequent modifications using high fidelity methods are crucial. In this report, the polymer microstructure of a helical alkyne polycarbodiimide has directly been probed through 15N NMR spectroscopy on isotopic labeled poly(N-(3-ethynylphenyl)-15N′-hexyl)carbodiimide and found to be a highly regioregular polymer structure. This polymer undergoes facile and quantitative CuAAC "click" chemistry, yielding perfectly alternating functional polymers. Advances have been made through the synthesis of new optically active alkyne polycarbodiimides with two independently modifiable pendant groups per repeat unit of polymers. Orthogonal postmodifications of the pendant groups were then performed to incorporate two different sets of small molecules in the repeat unit of polymers in a controlled manner and under mild reaction conditions using either sequential CuAAC "click" reactions when two dissimilar alkyne groups are present or a combination of CuAAC and thiol-ene click chemistries when pendant groups bear alkyne and vinyl moieties.

Diversity-orientated synthesis of 3,5-bis(arylamino)pyrazoles

The synthesis of differentially-substituted 3,5-bis(arylamino)pyrazoles has not yet been documented. During our investigation, we managed to develop a novel, entirely combinatorial synthesis of 3,5-bis(arylamino)pyrazoles relying on a simple one-pot two-step operation.