Benzeneseleninic anhydride

The several members of this reactive group involved in hazardous incidents are Acetic anhydride, 1534 Benzeneseleninic anhydride, 3495 Benzenesulfonic anhydride, 3498... [Pg.23]

P-Azo-[2-methyl-1,2-dicarbadecaborane( 14)], 2624 2-Azoxyanisole, 3653 1,4-Benzenediol-oxygen complex, 2334 Benzeneperoxy sulfonic acid, 2341 Benzeneseleninic acid, 2335 Benzeneseleninic anhydride, 3495 Benzenethiol, 2344 2,2 -Bi-l,3-dithiole, 2215 2,2 -Bipyridyl 1-oxide, 3258 Bis(cyclopentadienyl)lead, 3294 Bis-A(imidosulfurdiiluoridato)mercury, 4342 Bismuth trisulfide, 0234... [Pg.333]

Subsequent ring closure with ammonia, hydrogenation using PtO2/H2 or Pd-C/H2 [32], DCC/HOBt-mediated amidation with t-butyl amine, followed by dehydrogenation using benzeneseleninic anhydride or 2,3-dichloro-5,6-dicyano-l, 4-benzoquinone (DDQ)/bis(trimethylsilyl)-trifluoroacetamide (BSTFA) [33] combination afforded 4. [Pg.302]

Among other oxidizing agents286 that have been used to accomplish the conversion of ArCHj to ArCHO are ceric ammonium nitrate,287 ceric trifluoroacetate,288 benzeneseleninic anhydride,257 KMnCV-EtjN,289 and silver(II) oxide.290 Oxidation of ArCHj to carboxylic acids is considered at 9 11. [Pg.1191]

Oxidation of phenols and hydroquinones.3 Both 1- and 2-naphthol are oxidized by benzeneseleninic anhydride to 1,2-naphthoquinone in comparable yield (62-63%). This orr/io-selectivity is general and is explained by a mechanism outlined in equation (I). As expected, the reagent oxidizes hydroquinones to the quinones in 84-92% yield. [Pg.23]

HYDROXYLATION Benzeneseleninic anhydride. Diperoxo-oxohexamelhyl-phosphoramidomolybdenum(Vl). Hydrogen peroxide. Iodosobenzene. Oxygen. Ozone-Silica gel. Perchloryl fluoride. [Pg.468]

Benzeneseleninic anhydride-Cyanotri-methylsilane, 28 a-Methylbenzylamine, 185 Anhydrides Tetracyanoethylene, 289... [Pg.384]

Benzeneseleninic anhydride-Cyanotri-methylsilane, 28 N-Benzyl-N-methoxymethyl-N-(trimethylsilyl)methylamine, 31 0,N-Bis(trimethylsilyl)acetamide, 34 Bis(trimethylsilyl)acetylene, 97, 309 1,4-Bis(trimethylsilyl)-l, 3-butadiyne, 179... [Pg.412]

Cinnamyltrimethylsilane, 295 Crotyltrimethylsilane, 86, 322, 340 Cyano-r-butyldimethylsilane, 87 Cyanotrimethylsilane, 87 Cyanotrimethylsilane-Benzeneseleninic anhydride, 28... [Pg.412]

Benzeneselenenyl halides, 34-37 Benzeneselenenyl iodide, 36 Benzeneseleninic anhydride, 37—39 Benzenesulfenyl chloride, 39-40 Benzenesulfonyl fluoride, 40 Benzenesulfonylnitrile oxide, 40-41 1 -Benzenesulfonyl-2-trimethylsilylethane, 41-42... [Pg.331]

Dehydrogenation of 3-kelo steroids. The dehydrogenation of 3-keto steroids to l,4-diene-3-ones with benzeneseleninic anhydride (8, 31) can be carried out in comparable yield by use of a process in which the benzeneseleninic anhydride is used in catalytic amounts and is continuously regenerated from diphenyl diselenide by oxidation with iodylbenzene. In practice, m-iodylbenzoic acid is a more convenient reagent, since m-iodobenzoic acid is easily recovered. 12-Keto and 12-hydroxy steroids arc oxidized by the catalytic system to A9(1 - -keto steroids in high yield. In fact, methyl desoxycholate (1) can be oxidized in this way directly to the trienedione 2 in 64% yield.1... [Pg.480]

J-ENONES Benzeneseleninic anhydride. I LAVANONES Thallium(IU) nitrate. IIYDROARENES Manganese dioxide. INDOLES Bcn/rncsclcninic anhydride. KETONES lodylhenzcne LACTONES Benzene,soloninic anhydride. [Pg.647]

See also in sourсe #XX -- [ Pg.407 ]

See also in sourсe #XX -- [ Pg.375 , Pg.597 , Pg.884 , Pg.1165 , Pg.1171 , Pg.1173 , Pg.1188 , Pg.1191 , Pg.1195 ]

See also in sourсe #XX -- [ Pg.18 ]

See also in sourсe #XX -- [ Pg.20 ]

See also in sourсe #XX -- [ Pg.821 , Pg.855 ]

See also in sourсe #XX -- [ Pg.260 ]

See also in sourсe #XX -- [ Pg.71 ]

See also in sourсe #XX -- [ Pg.391 ]

See also in sourсe #XX -- [ Pg.159 ]

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