340256-13-5

Upstream product

• 110-52-1 1,4-dibromo-butane 
• 16466-61-8 1,2-bis(t-butyloxycarbonyl)hydrazine 
• 13051-19-9 di-tert-butyl 1,2,3,6-tetrahydropyridazine-1,2-dicarboxylate 
• 870-50-8 di-tert-butyl-diazodicarboxylate 

Downstream Products

• 868139-67-7 benzyl 2-(3-methyl-1H-pyrazole-5-carbonyl)piperazine-1-carboxylate 
• 89990-53-4 tetrahydropyridazine dihydrochloride 
• 505-19-1 piperidazine 

Relevant academic research and scientific papers

δ-Selective functionalization of alkanols enabled by visible-light-induced ligand-to-metal charge transfer

We demonstrate the application of ligand-to-metal charge transfer (LMCT) excitation to the direct catalytic generation of energetically challenging alkoxy radicals from alcohols through a coordination-LMCT-homolysis process with an abundant and inexpensive cerium salt as the catalyst. This catalytic manifold provides a simple and efficient way to utilize the characteristic reactivity and selectivity of transient alkoxy radicals for δ-selective C-H bond functionalization. Under mild redox-neutral conditions without the need for prefunctionalization, this method provides a versatile platform to access molecular complexity from simple and abundant alcohols.

A divergent synthetic pathway for pyrimidine-embedded medium-sized azacycles through an N-quaternizing strategy

Medium-sized heterocycles have recently received significant attention because of their potential roles as modulators of protein-protein interactions, but their molecular diversity and synthetic availability are still inadequate to meet the demand. To address these issues, we developed a new divergent synthetic pathway for skeletally distinct pyrimidine-containing medium-sized azacycles. We introduced N-quaternized pyrimidine-containing polyheterocycles as novel key intermediates for diversity-generating reactions via selective bond cleavages or migrations and prepared 14 discrete core skeletons in an efficient manner. The skeletal diversity of the resulting molecular frameworks was confirmed by chemoinformatic analysis.

HERBICIDAL BENZOXAZINONES

The present invention provides benzoxazinones of formula I wherein R1 is hydrogen or halogen; R2 is hydrogen, C1-C6-alkyl, C1-C6-haloalkyl, C3-C6-cycloalkyl, C3/

Substituted Pyrazalones

The invention is related to compounds of formula (I) as antagonists of the TGFβ family type I receptors, Alk5 and/or AIk 4, compositions and methods of use. The compounds of formula (I) can be employed in the prevention and/or treatment of diseases such a

Ruthenium tetroxide oxidation of N,N'-Diboc hexahydropyridazines

The ruthenium tetroxide (RuO4) oxidation of the 3-substituted N,N'-diBochexahydropyridazines gave the 6-oxohexahydropyridazines in good to high yields, whereas the oxidation of the unsubstituted ones also gave the 3,6-dioxo derivatives. The 3,6

Development of cyclic hydrazine and hydrazide type organocatalyst-mechanistic aspects of cyclic hydrazine/hydrazide-catalyzed diels-alder reactions

Some hydrazines and hydrazides were prepared and screened for their catalytic efficiencies in Diels-Alder reactions. 1H-NMR studies and ab initio calculations revealed that catalytic efficiencies of these catalysts are greatly dependent on the release of the catalysts from the Diels-Alder adducts.

Biginelli reactions catalyzed by hydrazine type organocatalyst

Pyrazolidine dihydrochloride can be used in the acceleration of Biginelli reactions between urea, ethyl acetoacetate and various aldehydes to provide DHPMs in good to excellent yields.

Composition for dyeing keratin fibers, comprising at least one diamino-N,N-dihydropyrazolone derivative, at least one coupler, and at least one heterocyclic direct dye

Disclose herein is a composition for dyeing keratin fibers, for example, human keratin fibers such as the hair, comprising at least one oxidation base chosen from diamino-N,N-dihydropyrazolones and addition salts thereof, at least one coupler, and at least one heterocyclic direct dye. Also disclosed herein is a method for dyeing keratin fibers comprising applying a composition of the present disclosure to the keratin fibers. The compositions and methods of the present disclosure may make it possible to obtain fast coloration of keratin fibers that is resistant to light and/or to washing.

Synthesis, biological evaluation and structural determination of β-aminoacyl-containing cyclic hydrazine derivatives as dipeptidyl peptidase IV (DPP-IV) inhibitors

Inhibitors of dipeptidyl peptidase IV (DPP-IV) have been shown to be effective treatments for type 2 diabetes. A series of β-aminoacyl-containing cyclic hydrazine derivatives were synthesized and evaluated as DPP-IV inhibitors. One member of this series, (R)-3-amino-1-(2-benzoyl-1,2-diazepan-1-yl)-4-(2,4,5-trifluorophenyl)but an-1-one (10f), showed potent in vitro activity, good selectivity and in vivo efficacy in mouse models. Also, the binding mode of compound 10f was determined by X-ray crystallography.

Composition for dyeing keratin fibers, comprising at least one diamino-N,N-dihydropyrazolone derivative, at least one coupler and at least one associative polyurethane polymer

The present disclosure relates to a composition for dyeing keratin fibers, for example, human keratin fibers such as the hair, comprising at least one oxidation base chosen from diamino-N,N-dihydropyrazolone compounds and addition salts thereof, at least one coupler and at least one associative polyurethane polymer, and also to a dyeing process and kit using such a composition. The present disclosure makes it possible, for instance, to obtain fast coloration of keratin fibers that is resistant to light and to washing.