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3.5- dioxo-4-isopropyl

Dichloro-3,5-dioxo-4-isopropyl-2-methyl- E12b, 536 (H3C-CO-A-CO-CH2-R + TeCl4)... [Pg.646]

Hydroxy-l,l-dioxo-l,2-dihydro-lX -benzo [e] [1,2] thiazine-3-carboxylic acid isopropyl ester (55)... [Pg.421]

After being left in the refrigerator overnight the mixture, which has set solid, is triturated with 50 ml of isopropyl alcohol and the solid product filtered off and dried in vacuo over phosphorus pentoxide. 63 g (60% yield) of 1,2-diphenyl-3,5-dioxo-4-n-butyl-4-(N -methylpiper-azinomethyl)pyrazolidine are obtained, melting at 1 29°C after recrystallization from 150 ml of isopropyl alcohol. [Pg.1241]

THF and its impurities (acetone, acrolein, 2,3-dihydrofuran. butyraldehyde, isopropyl alcohol, tetrahydrofuran, 1,3-dioxo-lane, 2-methyltetrahydrofuran, benzene, and 3-methyltetrahv-drofuran)... [Pg.67]

Hydroxy-l,3-dioxo- 409 2-Hydroxy-l-hydroxymethyI- 296 /rarcs -1-Hydroxy-2-isopropyl- 328 Hydroxylamino- 375, 472, 682... [Pg.934]

Methyl 2,3-diamino-6-methylbenzoate gave methyl 6-methyl-2,3-dioxo-l,2,3,4-tetrahydro-5-quinoxalinecarboxylate (252) [(C02H)2,4M HCl, reflux, 90 min 69% note survival of the ester grouping]. 2,3-Diamino-5,6-dichlorotoluene gave 6,7-dichloro-5-methyl-2,3(l//,4//)-quinoxalinedione (253) [(C02H)2, 4M HCl, reflux, 6 h 66%], 2-Isopropylaminoaniline gave l-isopropyl-2,3(l//,4//)-quinoxalinedione (254)... [Pg.36]

Isopropylcatechol, see Isopropylbenzene Isopropyl-l-chloro-2,3-dioxo-l-indanecarboxylate, see... [Pg.1534]

This paper traces in some detail the path which led to the discovery of a new class of herbicides, the 2-(5-oxo-2-imidazolin-2-yl)arylcarboxylates. The journey started when it was found that a phthalimide, a-isopropyl-a-methyl-l,3-dioxo-2-isoindoline-acetamide, had sufficient herbicidal activity to warrant further synthesis effort. This work led to a series of analogs essentially devoid of herbicidal activity yet possessing interesting plant growth regulating effects. Further chemical modifications resulted in the synthesis of two new groups of compounds, imidazoisoindolediones and dihydro-imidazoisoindolediones, and the return of herbicidal activity. The imidazoisoindolediones were in turn transformed into o-(5-oxo-imidazo-lin-2-yl)benzoates, the first members of a very interesting new class of herbicides. [Pg.29]

Again, only one example of this synthesis has been reported. Like the analogous substrate (140), isobutyl 1,1 -dimethyl-5,8-dioxo-1,5,6,7,8,8a-hexahydro-3//-thia-/oIo13,4-a pyrazine-3-carboxyIic acid (142) underwent hssion and desulfurization (on stirring with ethanolic Raney nickel at 20°C for 12 h) to afford an hydropy-razine, this time l-isobutoxycarbonylmethyl-6-isopropyl-3,6-dihydro-2,5(l//, 4H)-pyrazinedione (143) in 89% yield.1255... [Pg.69]

Ethyl 5-isopropyl-3,6-dioxo-2-piperazinecarboxylate (79) gave ethyl 3,6-diethoxy-5-isopropyl-2,5-dihydro-2-pyrazinecarboxylate (80) (Et3OBF4, CH2C12, 20°C, 40 h > 80%) 703,1498 also homologous dialkoxy products likewise.703 Also other examples.1036,1217... [Pg.203]

Isopropyl 4-benzyl-2,5-dioxo-6-(2,4,5-trimethoxy-3-methylbenzyl)-3-(2, 4,5-trimethoxy-3-methylbenzylidene)-l-piperazinecarboxylate (195) gave isopropyl 4-benzyl-2-hydroxy-5-oxo-6-(2,4,5-trimethoxy-3-methylbezyl)-3-(2,5-trimethoxy-3-methylbenzylidene)-l-piperazinecarboxylate (196) [LiAl(OBu )3H, THF, 0°C, 1 h 69%] also related esters likewise.292... [Pg.222]

Oxazolidin 2,5-Dioxo-4-isopropyl- VIII, 113 (Cyclo-kond.) XI/2, 375 (Cyclokond.) XV/2, 193 (Cyclokond.) E2If 5832 (2-NH2 — COOH + C0C12)... [Pg.288]

Pyrimidin 1,3-Dimethyl-2,4-dioxo-hexahydro- IV/5b, 1444 Sydnon 4-Isopropyl-3-methyl- E8c, 400 [H3C-N(NO)-CH(R)-COOH/H ]... [Pg.295]

Piperazin 2,5-Dioxo-3-isopropyl-[Cyclo-(L-Val-Gly)] E21f. 5832 (H2N - CH2 - COOR + 4-R-2,5-dioxo-l,3-oxazolidin)... [Pg.403]

Piperazin 2,5-Dioxo-l-hydroxyl-isopropyl- E16a, 190 (O —R-Spalt.)... [Pg.403]

Pyridylmethoxy)- -ethylester E16a. 247 (O-Alkyl.) Cyclopenten-l-olat 2-Dimethylami-no-3,4-dioxo-5-dimethyl-iminio-no- E15/2, 1550 (Utnlager.) 5,7-Diaza-spiro 2.5]octan l-Isopropyl-4,6,8-trioxo- E17a, 297 [En — l,l-(COOR)2/NaH/ (H3C)3S(0)I + Harnstoff]... [Pg.632]

Piperazin 5,5-Dimethyl-2,3-dioxo-l-isopropyl- XI/2, 21 Propen l-Cyclohexylamino-2-nitro-E15/2, 1373 (Imin + R-O-N02)... [Pg.662]

Cyan-1 -isopropyl-2,3,3-trimethyl-E16c, 759 (aus Cl —C — C —C = N — R) Carbodiimid Cyclohexyl-isopropyl-E4, 894 (Thioharnstoff + HgO) Cyclobutan 1,3-Bis-[methylimino]-tetramethyl- E17e, 421 (Dioxo -> Bis-imino)... [Pg.805]

Cyclobutene 3,4-Dioxo-2-isopropyl-oxy-1 -(trimethylsilyl-ethiny 1)-E17f, 804 [1,2-(OR)2 — 4-OH — 3-oxo —3-inyl —cyclobutan + HC1]... [Pg.1040]

Dioxo-8-isopropyl-6-metho-xycarbonyl-3-methyl- E21c, 2976 (Succinimid +... [Pg.1051]

Cyclobuten 2-Chlor-3,4-dioxo-l-(N-isopropyl-4-nitro-anilino)-E15/2, 1494 (Cl - NR2)... [Pg.1113]

See other pages where 3.5- dioxo-4-isopropyl is mentioned: [Pg.507]    [Pg.515]    [Pg.429]    [Pg.393]    [Pg.1574]    [Pg.808]    [Pg.203]    [Pg.238]    [Pg.996]    [Pg.62]    [Pg.206]    [Pg.287]    [Pg.377]    [Pg.382]    [Pg.507]    [Pg.515]    [Pg.617]    [Pg.651]    [Pg.652]    [Pg.778]    [Pg.795]    [Pg.859]    [Pg.876]    [Pg.915]    [Pg.928]    [Pg.937]    [Pg.1053]   
See also in sourсe #XX -- [ Pg.429 ]

See also in sourсe #XX -- [ Pg.429 ]



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2.4- Dioxo

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