A displasia do desenvolvimento quadril (DDQ) engloba condições relacionadas a anormalidades no em lactentes, envolve irregularidades acetábulo e porção proximal fêmur instabilidade na articulação quadril. Recém-nascidos podem apresentar frouxidão região imaturidade nas primeiras semanas de vida que melhoram sem intervenção maioria das vezes. ultrassonografia é considerada como método confiável ...

The C-H amination of benzene derivatives was achieved using DDQ as photocatalyst and BocNH2 as the amine source under aerobic conditions and visible light irradiation. Electron-deficient and electron-rich benzenes react as substrates with moderate to good product yields. The amine scope of the reaction comprises Boc-amine, carbamates, pyrazoles, sulfonimides and urea. Preliminary mechanistic in...

Herein, we report a convenient one-pot synthesis of 1,2,4-triazinyl derivatives benzocoumarins. The proposed approach consists in the nucleophilic addition tetrahydrobenzo annulated dimethoxycoumarin to 1,2,4-triazines followed by double oxidation both dihydrotriazine and groups with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ). was carried out presence three-fold excess methanesulfonic acid...

An algorithm for diagnosing two node bridging faults in static CMOS combinational circuits(full scan circuits) is presented. This algorithm uses results from I DDQ testing. The bridging faults considered can be between nodes that are outputs of a gate or internal nodes of a gates. Experimental results on all the ISCAS89 circuits show that I DDQ measurement based diagnosis using a small number o...

Como uma das anomalias esqueléticas mais frequentes, a displasia do desenvolvimento quadril (DDQ) é caracterizada por gama considerável de patologia, desde frouxidão menor dos ligamentos na articulação até luxação completa. Acredita-se que detecção precoce e o tratamento subsequente da melhorem seu prognóstico. Os fatores risco frequentemente relatados para DDQ são história familiar positiva DD...

C–H activation of the methyl group of toluene and related ArCH3 derivatives by 2,3-dichloro-4,5-dicyano-1,4-benzoquinone (DDQ) gives insertion products, ArCH2O[C6Cl2(CN)2]OH via a rate-determining hydride abstraction by DDQ. The resulting benzylic ether can undergo reactions with phosphines to give benzylic phosphonium salts (Wittig reagents) and with phosphites to give phosphonate esters (Horn...

A displasia do desenvolvimento quadril (DDQ) é uma condição ortopédica comum em lactentes e crianças, caracterizada por anormalidades na articulação quadril. Sua incidência varia diferentes regiões geográficas, mas estima-se que afete cerca de 1 a 3 cada 100 recém-nascidos, sendo mais frequente meninas bebês com histórico familiar DDQ. Essa complexa composta pelo osso (osso ilíaco), cabeça femo...

Two simple and accurate spectrophotometric methods are presented for the determination of anti-malarial drugs, chloroquine phosphate (CQP) and pyrimethamine (PYM), in pure and in different pharmaceutical preparations. The charge transphere (CT) reactions between CQP and PYM as electron donors and 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ) pi-acceptor and iodine sigma-acceptor reagents to giv...

Formation of the molecular complexes between meso-tetraphenylporphyrin (TPP) and the p-acceptors 2,3-dichloro-5,6-dicyanobenzoquinone (DDQ) and tetracyanothylene (TCNE) in chloroform solution was investigated spectrophotometrically. The formation constants of the resulting 1:1 molecular complexes were determined using the Benesi-Hildebrand and Nash methods. The TPP-DDQ pro...

Simple, accurate and precise spectrophotometric methods have been developed for the determination of sitagliptin and vildagliptin in bulk and dosage forms. The proposed methods are based on the charge transfer complexes of sitagliptin phosphate and vildagliptin with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), 7,7,8,8-tetracyanoquinodimethane (TCNQ) and tetrachloro-1,4-benzoquinone (p-chlor...