2371-98-4

Upstream product

• 64-18-6 formic acid 
• 64-17-5 ethanol 
• 106-47-8 4-chloro-aniline 
• 142-29-0 cyclopentene 
• 64-19-7 acetic acid 
• 673-41-6 p-chlorobenzenediazonium tetrafluoroborate 
• 54762-78-6 4-(4-chloro-phenyldiazenyl)-morpholine 
• 120-92-3 cyclopentanone 
• 873-77-8 (4-chlorphenyl)magnesium bromide 
• 106-39-8 bromochlorobenzene 
• 106-46-7 para-dichlorobenzene 
• 637-87-6 1-Chloro-4-iodobenzene 

Downstream Products

• 73961-85-0 diethyl 2-<2-(p-chlorophenyl)cyclopenten-3-yl>-2-hydroxypropane-1,3-dioate 
• 112607-36-0 (+)-(S)-δ-(4-chlorophenyl)-δ-valerolactone 
• 1459806-94-0 C₁₁H₁₁ClO₂ 
• 1217501-39-7 4-cyclopentenylbenzeneboronic acid 
• 1263869-33-5 2-chloro-7-(4-chlorophenyl)-N-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-amine 
• 1263869-32-4 2-chloro-7-(4-chlorophenyl)-4-(3,3-difluoroazetidin-1-yl)-6,7-dihydro-5H-cyclopenta[d]pyrimidine 
• 1263869-31-3 2-chloro-7-(4-chlorophenyl)-N,N-dimethyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-amine 
• 1263869-27-7 2,4-dichloro-7-(4-chlorophenyl)-6,7-dihydro-5H-cyclopenta[d]pyrimidine 
• 1263869-30-2 7-(4-chlorophenyl)-6,7-dihydro-1H-cyclopenta[d]pyrimidine-2,4(3H,5H)-dione 
• 1263869-29-9 7-(4-chlorophenyl)-6,7-dihydrocyclopenta[e][1,3]oxazine-2,4(3H,5H)-dione 
• 40297-26-5 (±)-2-(4-chlorophenyl)cyclopentan-1-one 

Relevant academic research and scientific papers

Copper-catalyzed ring-opening C(sp3)-N coupling of cycloketone oxime esters: Access to 1°, 2° and 3° alkyl amines

A novel copper-catalyzed C(sp3)-N coupling of cycloketone oxime esters with nitrogen nucleophiles has been realized. All of the N-aryl/alkylanilines, anilines and benzophenone imine could be employed in this protocol to produce a variety of 1°, 2° and 3° alkyl amines in one or two steps. These resultant cyano-containing alkyl amines were proven to be versatile synthetic building blocks in a variety of chemical transformations.

Synthesis method of 4-cyclopentyl biphenyl fluorinated compound

The invention provides a synthesis method of a 4-cyclopentyl biphenyl fluorinated compound. The method comprises the steps of taking p-chloro-halobenzene as a starting material and carrying out Grignard reaction to generate a Grignard reagent II of the p-chloro-halogenated benzene; enabling the generated Grignard reagent II of the p-chloro-halogenated benzene and cyclopentanone to be subjected toa coupling reaction to generate cyclopentanol chlorobenzene; carrying out a dehydration reaction to generate cyclopentene chlorobenzene; carrying out a one-pot reaction to generate 4-cyclopentenyl phenylboronic acid; enabling the generated 4-cyclopentenyl phenylboronic acid and fluorinated halogenated benzene to be subjected to a coupling reaction to generate a 4-cyclopentenyl biphenyl fluorinatedcompound; carrying out a hydrogenation reaction to obtain the 4-cyclopentyl biphenyl fluorinated compound. The synthesis method provided by the invention has the characteristics of being high in conversion rate, low in cost, safe and stable in process, short in reaction steps, environmentally friendly in process route, and less in pollutant emission.

Regio- and enantioselective Baeyer-Villiger oxidation: Kinetic resolution of racemic 2-substituted cyclopentanones

A kinetic resolution of racemic 2-substituted cyclopentanones via highly regio- and enantioselective Baeyer-Villiger oxidation has been successfully developed. The reaction could afford the normal 6-substituted δ-lactones in up to 98% ee and >19/1 regioselectivity. Meanwhile, the unreacted ketones were recovered in excellent ee values (up to 98%). It represents the best results of the kinetic resolution of racemic 2-substituted cyclopentanones via nonenzymic asymmetric BV oxidation.

COMPOUNDS FOR THE REDUCTION OF β-AMYLOID PRODUCTION

The present disclosure provides a series of compounds of the formula (I), which modulate β-amyloid peptide (β-ΑΡ) production and are useful in the treatment of Alzheimer's Disease and other conditions affected by β-amyloid peptide (β-ΑΡ) production.

COMPOUNDS FOR THE REDUCTION OF β-AMYLOID PRODUCTION

The present disclosure provides a series of compounds of the formula (I) which modulate β-amyloid peptide (β-AP) production and are useful in the treatment of Alzheimer's Disease and other conditions affected by β-amyloid peptide (β-AP) production.

Arenediazonium o-benzenedisulfonimides as efficient reagents for Heck-type arylation reactions

Arenediazonium o-benzenedisulfonimides can be used as new and efficient reagents for Heck-type arylation reactions of some common substrates containing C-C multiple bonds, namely ethyl acrylate, acrylic acid, acroleyne, styrene and cyclopentene. The reactions were carried out in an organic solvent, in the presence of Pd(OAc)2 as pre-catalyst, and gave rise to arylated products, for example, ethyl cinnamates, cinnamic acids, cinnamic aldehydes and stilbenes, possessing an (E)-configuration, and 1-arylcyclopentenes, in good to excellent yields. It is noteworthy that all the reactions led to the recovery, in greater than 80% yield, of o-benzenedisulfonimide, recyclable for the preparation of other diazonium salts.

Heck reaction of 1-aryltriazenes

1-Aryl triazenes upon treatment with TFA or HBF4 undergo Heck reaction via in-situ generated aryldiazonium salts.

Heck Reaction of Arenediazonium Salts: a Palladium-catalysed Reaction in an Aqueous Medium

Heck reaction of arenediazonium salts has been conveniently carried out with 1-2 molpercent Pd(OAc)2 in ethanol.An aqueous one pot procedure starting with anilines is described.

74. Solvolysis Mechanism of cis- and trans-2-Arylcyclopentyl p-Toluenesulfonates. Subsequent Step in cis-2-Arylcyclopentyl p-Toluenesulfonate Solvolysis

The solvolysis of a series of 1-deuteriated, 2-deuteriated, and undeuteriated cis-2-arylcyclopentyl p-toluenesulfonates in HCOOH, AcOH, and EtOH has been studied.We have shown that the classical secondary carbocation arising from substrate ionisation undergoes two concurrent processes, namely kc (direct products formation) and kip (hydrogenium bridged ion formation as tertiary carbocation or products precursor).The intrinsic properties of solvent and the aryl substituent electronic effects only affect the total solvolysis rate and the respective contributions of kc and kip processes.Comparing the observed and calculated kinetic isotope effects of D-C(2) allows one to conclude that no step can be called 'rate-determining step' but that the steps following ionisation have a preponderent effect on the total solvolysis rate.

REACTION OF DIAZONIUM SALTS WITH TRANSITION METALS-III. PALLADIUM(0)-CATALYZED ARYLATION OF UNSATURATED COMPOUNDS WITH ARENEDIAZONIUM SALTS

Palladium (0) catalyzed reactions of arenediazonium salts for arylation of aliphatic and cyclic olefins and allylic alcohols, styrene and ethyl acrylate were studied.Effect of the olefinic compounds and other reaction variables on the arylation were presented.Arylpalladium species was proposed as the most plausible intermediated in this reaction.