89169-57-3

Upstream product

• 19501-58-7 4-methoxyphenylhydrazine hydrochloride 
• 120-92-3 cyclopentanone 
• 935-50-2 4,4-dimethoxycyclohexa-2,5-dienone 
• 24214-72-0 cyclopentylhydrazine hydrochloride 
• 3471-32-7 4-Methoxyphenylhydrazine 
• 887122-66-9 trifluoroacetic acid 1-(1-cyclopenten-1-yl)-2-(4-methoxyphenyl)hydrazide 

Relevant academic research and scientific papers

Pd-Catalyzed Dearomatization of Indole Derivatives via Intermolecular Heck Reactions?

Pd-catalyzed intermolecular dearomative Heck reaction of indoles with aryl iodides is described. The challenges on both reactivity and regioselectivity are addressed by the judicious regulation of the geometric and electronic properties of the substrates. An array of indoline derivatives bearing C2-quaternary center is obtained in good to excellent yields (up to 93%) with exclusive regioselectivity under operationally simple conditions. The mechanistic proposal is supported by detailed DFT calculations.

A variation of the Fischer indolization involving condensation of quinone monoketals and aliphatic hydrazines

A new twist: A one-pot nitrous acid free, diazonium-free, and transition-metal-free variation of the Fischer indole synthesis has been developed. Condensation of quinone monoketals and aliphatic hydrazine hydrochlorides afforded indoles via intermediate alkylaryldiazenes. This method will complement the classical Fischer indole synthesis by providing indoles in two steps from widely available phenols under mild conditions. Copyright

TRICYCLIC CYTOPROTECTIVE COMPOUNDS

Compounds of formula (I): in which: X is a group of formula >CR1R2 or >SO2; Y is a group of formula >NH or >CR1R2; Z is a group of formula >C=O or >CH2 or a direct bond; R1 hydrogen and R2 is hydrogen, carboxy or hydroxy; or R1 and R2 together represent an oxo group, a methylenedioxy group or a hydroxyimino group; R3 is hydrogen or lower alkyl; R4 represents two hydrogen atoms, or an oxo or hydroxyimino group; R5 is hydrogen, lower alkyl or halogen; R6 is hydrogen, lower alkoxy or carboxy; R7 and R8 are each hydrogen, lower alkyl or halogen; and pharmaceutically acceptable salts and esters thereof can be used for the treatment or prophylaxis of acute or chronic neurodegenerative diseases or conditions such as Alzheimer’s Disease, Parkinson’s Disease, Huntington’s Chorea, Multiple Sclerosis or the sequelae to acute ischaemic events such as heart attack, stroke or head injury and for protection against ischaemic damage to tissues of peripheral organs.

Efficient synthesis of indoles using [3,3]-sigmatropic rearrangement of N-trifluoroacetyl enehydrazines

[3,3]-Sigmatropic rearrangement of N-trifluoroacetyl enehydrazines provides a novel method for the construction of indoles. N-Trifluoroacetyl enehydrazine having a cyclopentene ring smoothly underwent [3,3]-sigmatropic rearrangement followed by cyclizatio

Indole derivatives process for their preparation, pharmaceutical compositions containing them and their medicinal application

A chemical compound of formula (I) wherein: R1and R2are independently selected from hydrogen and alkyl; R3is alkyl; R4, R6and R7are independently selected from hydrogen, halogen, hydroxy, alkyl, aryl, amino, alkylamino, dialkylamino, alkoxy, aryloxy, alkylthio, alkylsufoxyl, alkylsulfonyl, nitro, carbonitrile, carbo-alkoxy, carbo-aryloxy and carboxyl; R5is selected from hydrogen, halogen, hydroxy, alkyl, aryl, amino, alkylamino, dialkylamino, alkoxy, aryloxy, alkylthio, alkylsulfoxyl, alkylsulfonyl, nitro, carbonitrile, carbo-alkoxy, carbo-aryloxy and carboxyl; A is a 5- or 6-membered partially unsaturated or aromatic heterocyclic ring or a 5- or 6-membered partially unsaturated carbocyclic ring, wherein if A is a 6-membered partially unsaturated carbocyclic ring then at least one of R4to R7is other than hydrogen, and pharmaceutically acceptable salts, addition compounds and prodrugs thereof, and the use thereof in therapy, particularly as an agonist or antagonist of a 5HT receptor, particularly a 5HT2Creceptor, for instance in the treatment of disorders of the central nervous system; damage to the central nervous system; cardiovascular disorders; gastrointestinial disorders; diabetes insipidus, and sleep apnea, and particularly for the treatment of obesity.

Efficient synthesis of bromocyclopenta[b]indoles via a bromination - Reduction sequence

Substituted cyclopenta[b]indoles are selectively brominated in good yields with excess pyridine - Br2 charge-transfer complex (PyBr2) in a one-pot reaction to provide 5 and/or 7-bromoindoles. The mechanism involves the formation of a

One-pot synthesis of indoles from ketones and hydrazines under mild reaction conditions

A facile one-pot method is presented for the synthesis of indoles via condensation of ketone with hydrazine followed by acylation and rearrangement. This convenient synthetic method provides an easy and simple access to indoles.