62516-59-0

Upstream product

• 104-87-0 4-methyl-benzaldehyde 
• 292638-85-8 acrylic acid methyl ester 
• 1752-88-1 tetrahydro-3H-pyrazol-3-one hydrochloride 
• 17822-51-4 1-benzylidene-3-oxo-1-pyrazolidinium-2-ide 

Downstream Products

• 1173920-40-5 dimethyl 8-(tert-butylimino)-1-oxo-5-(4-tolyl)-2,3,5,8-tetrahydro-1H-pyrazolo[1,2-a]pyridazine-6,7-dicarboxylate 
• 1198298-03-1 C₁₇H₁₆N₂O 
• 1245187-54-5 C₁₇H₁₈N₂O 
• 1258237-32-9 tert-butyl 1-(4-methylphenyl)-5-oxo-2-(trifluoromethyl)tetrahydro-1H,5H-pyrazolo[1,2-a]pyrazole-2-carboxylate 
• 1415506-31-8 5-(4-methylphenyl)-7-phenyl-2,3-dihydropyrazolo[1,2-a]pyrazol-1(5H)-one 
• 1446877-34-4 (1'S,2'R,3'R)-1-tert-butyl 3'-ethyl 2,5'-dioxo-1'-(p-tolyl)-3',5',6',7'-tetrahydro-1'H-spiro[indoline-3,2'-pyrazolo[1,2-a]pyrazole]-1,3'-dicarboxylate 
• 1591838-45-7 6,7-bis(phenylsulfonyl)-5-(p-tolyl)tetrahydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one 

Relevant academic research and scientific papers

Br?nsted Acid-Catalyzed (4 + 3) Cyclization of N, N′-Cyclic Azomethine Imines with Isatoic Anhydrides

A Br?nsted acid-catalyzed (4 + 3) cyclization of N,N′-cyclic azomethine imines with isatoic anhydrides has been discovered, which constructs seven-membered nitrogenous heterocyclic frameworks with overall high yields (up to 98% yield). This reaction repre

Dirhodium(ii)-catalyzed formal [3+2+1]-annulation of azomethine imines with two molecules of a diazo ketone

A highly diastereoselective formal [3+2+1]-cycloaddition reaction that produces multi-functionalized bicyclic pyrazolidinone derivatives is achieved in moderate to high yield by Rh2(4S-MPPIM)4-catalyzed reaction of azomethine imines with two molecules of a diazo ketone. The Royal Society of Chemistry 2013.

Copper(I) acetate-catalyzed cycloaddition between azomethine imines and propiolates under additive-free conditions

Because propiolates easily undergo base-catalyzed self-Michael addition, most popular catalytic systems in CuAAC cannot be used in the cycloaddition between azomethine imines and propiolates, because such reactions usually require the use of tertiary amin

Enantioselective copper-catalyzed [3+3] cycloaddition of azomethine ylides with azomethine imines

The more dipoles, the merrier: An asymmetric [3+3] cycloaddition of azomethine ylides derived from imines 1 with azomethine imines 2 in the presence of a chiral ferrocenylphosphine-copper catalyst afforded highly functionalized heterocyclic products 3 in high yield with excellent enantio- and diastereoselectivity (see scheme; DBU=1,8-diazabicyclo[5.4.0]undec-7-ene). The 1,3-dipolar reaction partners can be readily prepared from aldehydes. Copyright