1.2- Dibenzyl-4,5-diphenyl

Pyran-4-one, 2,6-bis(diethylamino)-3,5-diphenyl-conformation, 3, 622 Pyran-4-one, 2-chloromethyl-5-methoxy-benzothiazoles from, 3, 713 Pyran-4-one, 3,5-diacyl-IR spectra, 3, 595 Pyran-4-one, 3,5-dibenzyl-IR spectra, 3, 595... 

Dibenzyl phosphoramidates have been prepared from amino acids and the j)hos-phoryl chloride, (Bn0)2P(0)Cl. ° A diphenyl phosphoramidate has been prepared from a glucosamine it is converted by transesterification into a dibenzyl derivative to facilitate cleavage. ... 

Dibenzyl ketone (l,3-diphenyl-2-propanone) [102-04-5] M 210.3, m 34.0 . Fractionally crystd from its melt, then crystd from pet ether. Stored in the dark. 

S,S -Dipropyl Acetals and Ketals RR C(SC3H7)2 S,S -Dibutyl Acetals and Ketals RR C(SC4H9)2 S,S -Dipentyl Acetals and Ketals RR C(SC5H i, )2 S,S -Diphenyl Acetals and Ketals RR C(SC6H )2 S,S -Dibenzyl Acetals and Ketals RR C(SCH2C6H5)2... 

Diphenyl phosphates are converted by transesterification to dibenzyl phosphates upon treatment with BnONa in THF at 25° in 83% yield. ... 

Recently reported289 is an analogous reaction involving the acid-catalyzed cyclization of (lZ,3 ,5Z)-l,6-diphenylhexa-l,3.5-triene-l,6-diamine (14) in refluxing toluene to 2,7-diphenyl-3//-azepine (15). The l,6-bis(4-tolyl) and 1,6-dibenzyl derivatives behave similarly, but give substantially lower yields (14-18%). 

Ci4Hi402S, Dibenzyl sulfone c15h14o2s, cis-Styryl p-tolyl sulfone [(Z)-1 -Methyl-4-(2-phenylethenyl)sulfonylbenzene] c15HI4o2s, frans-Styryl p-tolyl sulfone [( )-l-Methyl-4-(2-phenylethenyl)sulfonylbenzene] C12H10O4S2, Diphenyl disulfone... 

Strecker153 reported in 1910 that the reaction of thionyl chloride with two equivalents of phenylmagnesium bromide or benzylmagnesium bromide afforded diphenyl or dibenzyl sulphoxides, respectively (equation 49 Table 8). The corresponding sulphides are formed as by-products of this reaction. Recently, other sulphoxides were prepared by this procedure154,155. It should be pointed out that this rather simple approach to the synthesis of symmetrical sulphoxides has not yet found wider application. 

Natriumboranat/Kobalt(II)-chlorid (s.S. 115) reduziert aliphatische undaroma-tische Sulfoxide in Athanol mit guten Ausbeuten zu den entsprechenden Sulfanen. Mit dieser Methode erhalt man7 z.B. Dibutyl-sulfan (98% d.Th.), Diphenyl-sulfan (95% d. Th.) oder Thiuxanthen (100H/o d. Th.). Dibenzyl-sulfoxid und Tetrahydro-thiophen-1-oxid werden praktisch nicht angegriffen. 

Triphenyl-zinnhydrid reduziert Diphenyl-disulfan zu Thiophenol, Dibenzyl-disulfan dagegen hauptsachlich zu Toluol6. 

Diphenyl-2,3-dihydro- -perchlorat 584f. 6-Phenyl-l,4-dibenzyl-2,3-dihydro- -perchlorat 584, 665... 

Recently, the thermal decomposition of diaryl alkanes such as dibenzyl and 1,3-diphenyl propane has been studied by Sato and coworkers (13), Collins and coworkers (14). These compounds were confirmed to be decomposed to alkyl benzenes gradually as a function of carbon chain length. 

Analysis of the products of the photolysis of Zr (benzyl) 4 in toluene at 30°C in the region 300-450-nm with mass spectrometry shows that the predominant peak is due to p-benzyl toluene with small amounts of dibenzyl, and 4,4 -dimethyl diphenyl. Rate measurements (Fig. 5a) suggest that in this region of the spectrum the polymerization proceeds through radical intermediates (29). This concept is supported by the fact that the spectrum of zirconium tetrabenzyl has a maximum at 317 nm and is identical with that found for the benzyl radical using flash photolysis techniques (30). Also zirconium tetrabenzyl on irradiation in toluene solution produces... 

The formal relationship between cyclopropenone and an a,a -biscarbene of a ketone (R—C—CO—C—R ) initiated investigations on photolytic and Ag-catalyzed decomposition of a, a -bisdiazo dibenzyl ketone (49) (Trost50 ). Indeed, diphenyl-cyclopropenone was formed in addition to other products (52 and tolane) derived from it furthermore, products resulting from solvent insertion and Wolff rearrangement of the monocarbene 50 were isolated (51) ... 

A similar acetylation procedure (without p-toluenesulfonic acid) has been employed to prepare other /3-diketones.5 As examples, cyclohexanone was converted to 2-acetylcyclohex-anone (73%) cyclopentanone yielded 2-acetylcyclopentanone (80%) 3-pentanone yielded 3-methyl-2,4-hexanedione (81%) dibenzyl ketone yielded l,3-diphenyl-2,4-pentanedione (72%), and acetophenone gave benzoylacetone (70%). 

The diphenyl derivative 388, R = R = Ph, has an absorption band at 1495 cm S which has been assigned to the carbonyl group. This assignment could be questioned. The following chemical reactions of the compound 388, R = R = Ph, may be noted (a) Raney nickel desulfurization followed by oxidation with manganese dioxide yields dibenzyl ketone,(b) hydrazine yields 3,5-diphenyl-4-hydroxypyrazole (390), (c) phenylhydrazine yields PhCH2COCPh=NNHPh," (d)... 

Similar behavior of other aromatic disulfides and thiols on gold electrodes has been described based on the SERS experiments [167]. Adsorption of benzenethiol, benzenemethanethiol, p-cyanobenzenemethanethiol, diphenyl sulfide, and dibenzyl sulfide was studied on the roughened gold electrode. All these species adsorb dissociatively as the corresponding thiolates. Monolayers formed from symmetric disulfides were exactly like those formed from the corresponding thiols. These monolayers were stable in a wide potential window from -1-800 to —1000 mV (versus SCE), which was limited by the oxidation of the Au surface from the positive side and hydrogen evolution at —1000 to —1200 mV at the negative side. 

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