PHENYLATION WITH DIPHENYL

Phenylation, of 3-diketones with diphenyliodonium chloride, 51, 131 of ketoesters with diphenyliodonium chloride, 51, 131 of nitroalkanes with diphenyliodonium chloride, 51, 132 PHENYLATION WITH DIPHENYL-... 

CUCI2 on phenyl magnesium halides also provide reasonable quantities of diphenyl. Uses include its action as a fungistat during shipment of apples and oranges, and as a heat transfer agent (dowtherms) mixed with diphenyl ether and terphenyls. 

Phenyl ether (diphenyl ether) [101-84-8] M 170.2, m 27.0", d 1.074, n - 1.57596. Crystd from 90% EtOH. Melted, washed with 3M NaOH and water, dried with CaCl2 and fractionally distd under reduced pressure. Fractionally crystd from its melt and stored over P2O5. 

Triphenylsulfonium tetrafluoroborate [(C6Hs)3 S" BF4 ] is used instead of diphenyl iodonium chloride to give phenyl radical as the initiating species. Potassium [tris(oxalato) cobaltate) (III)] with diphenyl iodonium chloride also has been used as the photoinitiator of acryl-... 

When excess amounts of the HHT of phenyl glycinate 42 were used with diphenyl phosphite, the preferred product was the novel cyclic derivative 45 (2). Presumably, ring-opening of the HHT produced intermediate 43 first, which lost an equivalent of glycinate formaldimine to give 44. The proximity of the activated phenyl carboxylate ester to the N-H in 44 presumably promoted intramolecular cyclization to 45 with loss of phenol (2). 

The synthesis of cyclopropenone imines 3 has been accomplished by several methods. Thus aromatic amines, e.g. p-nitraniline, can be reacted either with diphenyl cyclopropenone in HCl/ethanol or with the ethoxy cation 75 forming the immonium cation 150, which is deprotonated by tertiary bases to the N-(p-nitro-phenyl)-imine /5/llsl ... 

Whilst Lewis acids like SbCls or A1C13 form stable adducts with diphenyl cyclopropenone, from which the ketone can be regenerated unchanged208, trialkyl boranes effect a remarkable ring expansion to 2-phenyl indenone derivatives 309 containing an additional residue in the 3-position215. ... 

Hexafluoroisopropylidene-unit-containing copoly(ether ketone)s and copoly-(sulfide ketone)s are also synthesized by reacting mixtures of 2,2-bis(4-carboxy-phenyl)-1,1,1,3,3,3-hexafluoropropane (15) and 2,2-bis(4-carboxyphenyl)-propane (16) with diphenyl ether or diphenyl sulfide in PPMA, respectively (Scheme 10).18... 

Photolysis at room temperature of aryl telluroformates gives rise to oxoacyl radicals, which can be trapped with diphenyl diselenides giving the corresponding phenyl seleno-formates. ... 

Diisobutylaluminium phenyl tellurolate, a highly air- and moisture-sensitive reagent, prepared by reaction of diisobutylaluminium hydride with diphenyl ditelluride, undergoes an in situ addition to a,jS-unsaturated carbonyl compounds, leading to the corresponding jS-phenyltelluroaluminium enolate. This intermediate is hydrolysed by aqueous HCl into jS-phenyltelluro compounds or smoothly affords an aldol reaction with aldehydes to give a-hydroxyalkyl-jS-phenyltellurocarbonyl compounds. 

Diiodoxydi phenyl (Dijodo-diphenyl in Ger), 02I.C6H4.C6H4.I02, mw 470.02, amorpb solid, mp — explodes at 218° crystn from acetic acid yields 4,4,-diiododiphenyl prepd from the tetrachloride of 4,4 diiododiphenyl by reaction with.Na hypochlorite 8t boiling acetic acid (Refs 1 8e 2)... 

Activated nitro and halo substituents have been efficiently replaced by a variety of alkyl groups via SsAx reaction with carbanions. Examples include the displacement of the nitro group in compounds (10 X = 4-PhCO, 4-MeOCO, 4-CN, 4-N02, 4-PhS02, 3,5-(CF3>2) by the anion of 2-nitropropane in HMPA at room temperature (equation 2),83 and the reaction of p-dinitrobenzene with several ketones, esters and nitriles (RH equation 3) in Bu OK/liquid NH3 at -70 C.84 Interestingly, under the latter reaction conditions, p-chloronitrobenzene gave the product of alkylation rather than of SNAr displacement of chloride, as in equation (4).85 Further examples include the dehalogenation of p-halonitrobenzenes by 9-fluorenyl anions in DMSO at room temperature,34 and dehalogenation and denitration reactions by the carbanions of phenyl- and diphenyl-acetonitrile in DMSO or under PTC conditions.86... 

Table III shows analytical values of the polymer prepared. The presence of a small amount of terminal acetyl group was found with diphenyl malonate and small amounts of terminal formyl groups with phenyl triphenoxyacetate and diphenyl oxalate. A trace of phenol...

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