2.4- Dioxo-3,4-dihydro

Die Bestrahlung von Benzofurazan-l-oxid in Losung fiihrt unter Ringoffnung zu 2,7-Dioxo-2,7-dihydro-1 H-azepin1 ... 

Ammo-2.7-dioxo-2.7-dihydro anthraceno. [1.9-bc]-pyran 18 II471. 

Called Chrysenchinon, Chrysochinon, Dioxo -dihydro chry sen or Benzo-phenanthrenchinon in Ger),... 

Aoetylderivat des 2-Methyl meicapto-5.6-dioxo-dihydro-l. 3.4-thio= diazine 27 II 792. 

COLORPHOTOGRAPHY, INSTANp (Vol 6) N,Np[iminobis(9,10-dihydro-9,10-dioxo-4,l-anthracenediyl)]bis-benzamide [128-79-0]... 

Of the three benzenetricarboxyhc acids, only trimellitic acid as the anhydride is commercially produced in large volume, by Hquid-phase air oxidation of either pseudocumene or dimethyl benzaldehyde. The pseudocumene oxidation is another variant of the cobalt—manganese—bromine catalyst in acetic acid solvent as described in the terephthaUc acid section. The acid is available as a laboratory chemical (99). The lUPAC name of trimellitic anhydride is 5-isobenzofurancarboxyhc acid (l,3-dihydro-l,3-dioxo). 

N,N -(9,10-dihydro-9,10-dioxo-l,5-anth racene-diyl)bisben2 amide 61725 contact lenses only... 

Thiazolo[3,2-a]pyrimidinium, anhydro-8-ethyl-2,3-dihydro-5,7-dioxo-IR, 6. 681 (73JHC487)... 

Purine, 1,6-dihydro-8,9-dimethyl-6-thioxo-synthesis, 5, 583 Purine, 2,6-dimethoxy-synthesis, 5, 596 Purine, 2,6-dimethoxy-7-methyl-rearrangement, 5, 558 Purine, 2,7-dimethyl-halogenation, 5, 547 Purine, 7,9-dimethyl-UV spectra, 5, 517 Purine, 8,8-dimethyl-synthesis, 5, 580 Purine, 6-dimethylamino-mass spectra, 5, 519 occurrence, 5, 600 Purine, 6-dimethylamino-9-benzyl-alkylation, 5, 531 Purine, 3,7-dimethyl-6,8-dioxo-methylation, 5, 534 Purine, 6,8-dioxo-alkylation, 5, 534... 

Thiazolo[3,2-a]pyrimidinium hydroxide, 6,7-dihydro-5,7-dioxo-applications, 6, 709... 

Thieno[2,3-d]isoxazoline, 4,4-dioxo-3-(2,4,6-trimethylphenyl)-3 a,6a-dihydro-synthesis, 6, 998... 

Carminic acid (7-a-D-glucopyranosyl-9,10-dihydro-3,5,6,8-tetrahydroxy-l-methyl-9,10-dioxo-2-anthracene carboxylic acid. Neutral Red 4 Cl 75470) [1260-17-9] M 492.4, m... 

Hydroxy-l,l-dioxo-l,2-dihydro-lX -benzo [e] [1,2] thiazine-3-carboxylic acid isopropyl ester (55)... 

In agreement with the results of Cattelain, further methylation of the 3-methylmercapto derivative (96) results practically exclusively in 2-methyl-3-methylmercapto-5-oxo-2,5-dihydro-l,2,4-triazine (97). Further methylation of 5-methylmercapto derivative (90) yields 2-methyl-5-methylmercapto-3-oxo-2,3-dihydro-l,2,4-triazine (100). Their structure was confirmed by acid hydrolysis leading to 2-methyl-3,5-dioxo derivatives (62), As was already mentioned, this reaction is a suitable general procedure for preparing the 1-alkyl derivatives of 6-azauracil. ... 

Dioxo derivatives of 474 are known, " as well as 5-chloro-1,2-dihydro-1 -methyl-3-oxo-l,2,4,6,8-pentaazanaphthalene. ... 

When, aiming at its cardiotonic activity (stimulant), the 2,5-dioxo-l,2,5,6,7,8-hexahydro-3-cyano-6-bromoquinoline is made to react with different thioamides, the appropriate 6-substituted 8,9-dihydro- (R = cyanomethyl-, 2-oxopyrrolidinyl-methyl-, 2-oxohexahydroazepinomethyl-, and thioxopyrrolidinylmethyl-) (94KFZ43) or (R = H, Me, NH2, NH/S ) (86JAP(K)1, 89H1517) thiazolo[4,5-/Iquinolines 37 or oxidized products (89H1517) are produced. 

Reaction of malononitrile and quinazolinone 429 in the presence of three drops of NEts yielded pyrido[2,l-Z)]quinazolinone 430 (97MI7). 9,11-Dioxo-5,9-dihydro-l l//-pyrido[2,l-Z)]quinoline-8-carboxylates 432 were prepared in the reaction of anthranilonitrile and 2-piperidones 431 in boiling EtOH in the presence of AcOH (00JCS(P1)3686, 00PS133). 

The primary dihydro product can be obtained by reduction of the quinonoid dyestuff. Thus for example 4,4 -diphenyl-2,2 -dioxo-A -biselenazol-5,5 -inylidene bis-benzylidenehydrazone could be reduced to 4,4 -diphenyl-2,2 -benzylidene hydrazino-5,5 -biselenazoie (13). This... 

Oxo-2,3,6,7-tetrahydro-5//-pyrido[l,2,3- /e]-l,4-benzoxazine-2-carbox-ylates (291, X = H2) were obtained by hydrogenation of 4-substituted 3, 4-dihydro-2//-1,4-benzoxazine-2-carboxylates (290, X = H2) over 10% Pd/C catalyst, then by the treatment of free acids with (CF3C0)20 (99EUP894796). 5,7-Dioxo-2,3,6,7-tetrahydro derivatives 291 (X = 0) were prepared similarly from 290 (X = O). The products 291 (X = O) exist in 7-hydroxy-5-oxo-2,3-dihydro-5// tautomeric form. 

Chemical Name 5-Fluoro-N-hexyl-3,4-dihydro-2,4-dioxo-1 (2H)-pyrimidinecarboxamide Common Name HCFU Structural Formula ... 

Chemical Name N-[(cyclohexylamino)carbonyl] -4-[2-(3,4-dihydro-7-methoxy-4,4-dimethyl-1,3-dioxo-2(1 H)-isoquinolinyl)ethyl] benzenesulfonamide... 

Y2 receptors are characterised by an order of potency of NPY PYY > C-terminal fragment [Pro34]-substituted analogue > PP. BIIE 0246 ((S -iV2- 1 -[2-[4-[(i ,5)-5,11 -dihydro-6(6h)-oxodibenz[b,e]azepin-l 1 -yl]-l-piperazinyl]-2-oxoethyl]cyclopentyl]acetyl]-iV -[2-[l, 2-di-hydro-3,5-(4H)-dioxo-l, 2-diphenyl-3H-l, 2,4-ttiazol-4-yl]ethyl]-argininamide) is a Y2-selective antagonist with an affinity of 3 nM. 

Phth-Gly-Gly-OEttGlycme, V-[(l,3-dihydro-l,3-dioxo-2/f-isoindol-2-yl)aeetyl]-, ethyl ester] B 88%... 

Glycine, N- ((1,3-dihydro-l, 3-dioxo-2//-isomdol-2-yl)acetyl] -, ethyl ester (2641-02-3], 93... 

Dimethyleneperoxidecarbamide. See Vol 5, D1337-R 7-Hydroxy-1, 2-Dioxo-l, 2-Dihydro-Naphthalene. See this Vol, N20-R... 

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