Benzil dimethyl ketal

Alkyl ethers of benzoin Benzil dimethyl ketal 2-Hydroxy-2-methylphenol-l-propanone 2,2-Diethoxyacetophenone 2-Benzyl-2-At, V-dimethylamino- l-(4-morpholinophenyl) butanone Halogenated acetophenone derivatives Sulfonyl chlorides of aromatic compounds Acylphosphine oxides and bis-acyl phosphine oxides Benzimidazoles... 

Benzil dimethyl acetal Benzil dimethyl ketal Benzil mono(dimethyl acetal) Benzil mono(dimethyl ketal) a,a-Dimethoxy-a-phenylacetophenone a,a-Dimethoxy-deoxybenzoin 2,2-Dimethoxy-1,2-diphenylethan-1-one 2,2-Dimethoxy-1,2-... 

Wasserman and Saito have used diphenyl sulfide to intercept dioxetanes formed in the sensitized photooxidations of certain unsaturated systems. Thus reaction of cw-dimethoxystilbene (1) with singlet oxygen yields only the diox-etane (2) and the product of cleavage, methyl benzoate. However, addition of diphenyl sulfide to the reaction results in formation of benzil dimethyl ketal... 

Photocure 51. [Aceto] Benzil dimethyl ketal uv photoinitiatw. 

In a second study we have compared the performance of three commercial photolnltlators for surface cure in a commercial urethane acrylate formulation. The following photoinitiators were utilized in this study HCPK - alpha-hydroxy-alpha-cyclohexylphenylketone (Structure II), BDMK - benzil-dimethyl-ketal (Structure III), and AAP (Structure IV). The extinction spectra of these initiators are in Figure 8. 

Chem. Descrip. Benzil dimethyl ketal CAS 2465042-8 EINECS/ELINCS 246-386-6 Uses Photoinitiator for photopolymerization of polyester and acrylate UV-curable systems, adhesives, printing inks, surf, mount applies., photoresists, clear coatings on plastic/metal, and fillers/topcoats tor wood coatings... 

BENZIL DIMETHYL KETAL ACETOPHENONE DIETHYL KETAL... 

Benzil dimethyl Ketal (Irgacure 651 Ciba Geigy)... 

In a typical procedure for photochemical, radical thiol-ene and thiol-yne reactions (Yu et al., 2009), a mixture of PNIPAm-S-ALMA or PNIPAm-S-PROPA (0.2 g), 100% excess of target thiol (based on the molarity of ene or yne ), benzil dimethyl ketal (Irganure 651) photoinitiator (15.0 mg) in an appropriate volume of THF is exposed to UV light (A = 350 nm) for 2 h. The sample is dialyzed against methanol. It should be noted that the thiol-ene and thiol-yne reactions yield mono and bis end-functionalized PNIPAm homopolymers, respectively (see Scheme P12.15.1). 

Benzil diethyl ketal. See Benzil diethyl acetal Benzil dimethyl acetal Benzil a,a-dimethyl acetal. See 2,2-Dlmethoxy-2-phenylacetophenone... 

Cyanocarboxylic acid esters. 2-Oximinocyclohexanone dimethyl ketal, trimethyl orthoformate, and a little methanesulfonic acid added at -70° under Ng to liq. SO2, and refluxed 0.5 hr. at ca. -10° methyl 5-cyanopentanoate. Y 97%. -Similarly at 72° Benzil monoxime and triethyl orthoformate -> benzonitrile (Y 95%) and ethyl benzoate (Y 98%). M. M. Rogic et al., J. Org. Chem. 39, 3424 (1974) Beckmann fragmentation with tetrakis(triphenylphosphine)palladium cf. K. Maeda et al., Chem. Commun. 1975, 689. 

The cycloaddition of allal derivative 24 with dichloroketene followed by treatment of NaOMe in methanol afforded 1,2-dideoxy-P-D-altropyranoside 25 and dimethyl ketal 26 in 36 and 29% yields respectively. " In contrast to NaOMe, chlorocyclopropanated sugar 27 was also isolated in the case of NaOEt in ethanol. It has been suggested that the formation of ethyl ester 25a and chlorocyclopropanated sugar 27 proceeds through the same intermediate 28. Favorskii type reaction pathway has been ruled out due to ring strain in chlorocyclopropanone 28b. Alternatively, benzilic acid rearrangement has been proposed as more probable reaction pathway through common intermediate for 25,25a and 27. 

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