76094-72-9

Upstream product

• 29114-24-7 benzylidene-1,1'-bis(2-naphthol) 
• 135-19-3 β-naphthol 

Downstream Products

• 143210-28-0 (Z)-3-[2-(1-Phenyl-naphtho[2,1-b]furan-2-yl)-phenyl]-acrylic acid 2,3-dichloro-5,6-dicyano-4-{(Z)-3-[2-(1-phenyl-naphtho[2,1-b]furan-2-yl)-phenyl]-acryloyloxy}-phenyl ester 
• 143210-32-6 (E)-3-[2-(1-Phenyl-naphtho[2,1-b]furan-2-yl)-phenyl]-acrylic acid 2,3-dichloro-5,6-dicyano-4-{(E)-3-[2-(1-phenyl-naphtho[2,1-b]furan-2-yl)-phenyl]-acryloyloxy}-phenyl ester 

Relevant academic research and scientific papers

Iron-based metal-organic framework, Fe(BTC): An effective dual-functional catalyst for oxidative cyclization of bisnaphthols and tandem synthesis of quinazolin-4(3H)-ones

An iron-based metal-organic framework [Fe(BTC) (BTC: 1,3,5-benzenetricarboxylate)] has been shown to be an active and heterogeneous catalyst for both oxidative cyclization of methylenebisnaphthols and a modern tandem process (an in situ oxidation-aminal formation-oxidation sequence). Such a potential catalytic utility of Fe(BTC) makes it quite attractive for sustainable industrial chemistry.

Diastereoselective aerial oxidative cyclization of methylenebisnaphthols catalyzed by N-hydroxyimides in the presence of Fe3+ and Co 2+-Mn2+ catalysts

Aerial oxidative cyclization of methylenebisnaphthols to their corresponding spirans has been carried out using catalytic amounts of N-hydroxyimides and FeCl3·6H2O or Co(OAc) 2·4H2OMn(OAc)2·4H2/

Aerial oxidation of bisnaphthols to spironaphthalenones by a recyclable magnetic core-sell nanoparticle-supported TEMPO catalyst

Aerial oxidative cyclization of bisnaphthols to their corresponding mixture of two isomeric spirans 3 and 4 has been carried out using a catalytic amount of magnetic core-shell nanoparticle-supported TEMPO (MNST) combined with a small amount of FeCl3·6H2O. This catalytic system consistently has the advantages of moderate to good yields, low reaction times, mild and convenient conditions, simple experimental and work-up procedure, and of being environmentally benign and highly economic. The magnetically separable MNST catalyst makes it possible for it to be recovered and recycled for several times without significant loss of activity.

Oxidation of bisnaphthols to spironaphthalenones, revisited

(Chemical Equation Presented) Bis(2-hydroxy-1-naphthyl)methane derivatives have been efficiently converted to their corresponding spirans through three methods, i.e. oxidation by TCCA under mild reaction conditions, Ph3Bi catalyzed air oxidatio

Spirans. Part 12. Stereochemical Control in the Oxidative Cyclisation of Bisnaphthols

Almost all oxidising agents cyclise benzylidene-1,1'-bis-2-naphthol (1a) to the stereoisomers (2a) and (3a) of phenylnaphthofuran-2(1H)-spiro-1'(2'H)-naphthalen-2'-one.A few are stereospecific.Hypobromite and persulphate give (2a), whereas iodine oxyacids and (diacetoxyiodo)benzene are specific for (3a).Radical-type oxidants such as hexacyanoferrate(III) and 2,4-di-t-butyl-6-phenylphenoxyl (4) give mixtures.Horseradish peroxydase behaves like hexacyanoferrate(III).The presence in the benzylidene residue of methoxy, nitro, fluoro, and other groups has little effect upon the isomer ratios, which are believed to be determined mainly by the bulk of the benzylidene group and the limits it imposes upon conformations during the oxidation processes.Oxidation by (diacetoxyiodo)benzene occurs through a cyclic intermediate (9) and gives the less-hindered (3a); oxidation of hypobromite occurs not directly but by exchange through an aryl hypobromite (Scheme) which halogenates its opposite naphthol nucleus and then substitutes the halogen, with inversion, thus leading to the more-hindered isomer (2a).