Divinyl diphenyl

Formation of hydrogen bonds between phenols and naphthols on the one hand, and dimethyl, divinyl, diphenyl sulphoxides and other sulphinyl or sulphonyl derivatives on the other, have also been documented in the literature95-97. 

Test Polymers (Organotin) Diallyl Divinyl Diphenyl Dibenzyl Dicyclo... 

Aziridine, 2,3-diphenyl-l-(2,4,6-trinitrophenyl)-irradiation, 7, 61 Aziridine, 1,2-divinyl-rearrangement, 7, 539 Aziridine, 2,3-divinyl-rearrangement, 7, 42, 65, 539 Aziridine, N-ethyl-inversion, 7, 6 Aziridine, 2-halo-reactions, 7, 74 Aziridine, A/-halo-invertomers, 7, 6 Aziridine, 2-methyl- N NMR, 7, 11 Aziridine, methylene-ring-ring valence isomerizations, 7, 22 synthesis, 7, 92 Aziridine, iV-nitroso-reactions, 7, 74 Aziridine, iV-phosphino-inversion, 7, 7 Aziridine, 1-phthalimido-UV irradiation, 7, 62-63 Aziridine, l-(3-thienyl)-2-vinyl-rearrangement, 4, 746 Aziridine, 7V-trimethylsilyl-inversion, 7, 7 Aziridine, 1,2,3-triphenyl-irradiation, 7, 61 Aziridine, vinyl-isomerization, S, 287 Aziridinecarboxylic acid ring expansion, 7, 262 Aziridine-2,2-dicarboxylic acid, 1-methoxy-diethyl ester... 

Lipase CA catalyzed the polymerization of cyclic dicarbonates, cyclobis (hexamethylene carbonate) and cyclobis(diethylene glycol carbonate) to give the corresponding polycarbonates [105]. The enzymatic copolymerization of cyclobis(diethylene glycol carbonate) with DDL produced a random ester-carbonate copolymer. As to enzymatic synthesis of polycarbonates, reported were polycondensations of 1,3-propanediol divinyl dicarbonate with 1,3-propanediol [110], and of diphenyl carbonate with bisphenol-A [111]. 

Problem 14.55 Prepare the following ethers starting with benzene, toluene, phenol (C H OH), cyclohexanol, any aliphatic compound of three C s or less and any solvent or inorganic reagent a) dibenzyl ether, b) di-/i-butyl ether, (c) ethyl isopropyl ether, d) cyclohexyl methyl ether, (e) p-nitrophenyl ethyl ether, (/) divinyl ether (g) diphenyl ether. <... 

Stars of the type A2B2 were also prepared by the method developed by Quirk et al. In this case A was PS and B PI or PB [38,39]. Stars of the type A2(B-h-A)2, where A was PS and B PB were also synthesized by this method. The disadvantages of the method have already been mentioned. In order to overcome these problems the reaction of the living PS chains with the divinyl compound were monitored by SEC and UV spectroscopy, by observing the increase in absorbance of the diphenyl alkyllithium species at 438 nm. It is obvious that the method is very demanding experimentally and a lot of effort has to be exercised for the preparation of well defined products. 

Di-tert.-butyl-thiophosphinsaure-methylamid (8076 Stdn.)1024 Bis- [trifluormethy[ -thiophosphinsaure-amid (18074 Tage)1027 Divinyl-thiophosphinsaure-diethylamid (80715 Min.)1025 Diphenyl-thiophosphins dure-aziridid (8071 Stde.)1"26 Diphenyl-thiophosphinsdure-2-pyridylamid (8071 Stdc.)1026... 

The reaction of tellurium with acetylene and iodobenzene in the presence of potassium hydroxide, hexamethylphosphoric triamide, tin(II) chloride, and water under 12 atm acetylene in an autoclave at 100-120° produced diphenyl tellurium, phenyl vinyl tellurium, and divinyl tellurium4. Diphenyl tellurium could be the product of the arylation of the telluride dianion by phenyl iodide. 

Divinyl-2,2 -dipyrrole 61 was obtained from 3,4-hexanedione dioxime (62) with acetylene under pressure (Equation (18)). In the case of 1,2-cyclohex-anedione dioxime (63), 2,2 -dipyrrole 64, 2-pyridyl- (65) and 2-acylpyrroles 66 were isolated (Equation (19)) (06CHE34). Dioximes 67 and 68 gave their mono- (69 and 70) and divinyl derivatives 71 and 72, mostly 3,4-diphenyl-(73) and 3,4-di(furan-2-yl)-l,2,5-oxadiazoles 74 (Equation (20)). 

The compound 3,9-divinyl-2,4,8,10-tetraoxaspiro-[5.5]undecane together with a peroxide is utilized in the cross-linking or curing of polyethylene for wire and cable applications. Addition of 2,4-diphenyl-4-methyl-l-pentene (AMSd) inhibits scorch or premature cross-linking of the polymer, presumably through interception of the radicals.490... 

Die Additionsfahigkeit von Divinyl-thioathern ist auch aus der intramolekularen Itoak-tion von Bis-[2-phenyl-vinylj-sulfid. bei direkter Belichtung in Ather (Hanovia 450 W, Pyrex-Filter) zum lrans-2.3-Diphenyl-5-thia-bicyclo[2.1.0 pentan (34% F 73,1-73,6°) erkennbar4, s. a. S. 1016. 

Analogous decarbonylations have been observed for ketones under ultraviolet irradiation at elevated temperatures. From a preparative point of view the behavior of diphenyl-substituted and a,a-divinyl-substituted ketones is interesting, as they are decarbonylated when their benzene solutions are subjected to ultraviolet irradiation.69 This favorable effect of phenyl sub-stitutents on decarbonylation has been noted also for cyclic ketones for example, under suitable conditions l-phenyl-2-indanone eliminates carbon monoxide and yields 90% of 5,6,ll,12-tetrahydro-5,6-diphenyldibenzo[a,e]-cyclooctene as a mixture of cis- and trans-forms,10 whereas 2-indanone itself is hardly decarbonylated at all in benzene solution. That in other cases decarbonylation is usually more profitable in the gas than in the liquid phase is shown by studies of the photolysis of tetramethyl-l,3-cyclobutanedione which in the gas phase gives 2 equivalents of carbon monoxide and a quantitative yield of 2,3-dimethyl-2-butene.71... 

Other abbreviations. MAX, mixed anion exchange MIP, molecularly imprinted polymer PBB, polybrominated biphenyl PBDE, polybrominated diphenyl ether PBP, polybromianted phenols PDMS, polymethyldisiloxane PS-DVB, polystyrene-divinyl benzene SAX, stron anion exchange SPE, solid-phase extraction TBBPA, tetrabromobisphenol A TCBPA, tetrachlorobisphenol A. 

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