Ketone Michler

The compound is obtained from Michler ketone (128) and dimethylaniline in the presence of POCl3. Michler ketone in turn is synthesized from dimethylaniline (DMA) and phosgene with zinc chloride ... 

Spectrophotometric Determination of Microgram and Submicrogram Amounts of Silver with Thio-Michlers Ketone. Mikrochim. Acta 1967, 820. 

Condensation Reactions. Many triam inotriarylmethane dyes can be produced by condensation of Michlers ketone (9) with aromatic amines. The ketone must generally be activated with phosgene or phosphorus oxychloride, whereby a reactive blue chloro compound (10) is formed from the intermediate geminal dichloride. With V-phcnyl-1 -naphthylaminc, for example, (13) reacts to form Victoria blue B (11). 

Gut untersucht ist auch die photochemische Dimerisation des Cylohexa-1,3-diens. Nach Schenck et al. (264) bilden sich bei der photosensibilisierten Dimerisation bei 20 °C das anti-C4-Cycloaddukt 33, das syn-C4-Cyclo-addukt 34 und das exo-Diels-Alder-Addukt 35 in einem vom jeweils ver-wendeten Sensibilisator (z. B. Benzaldehyd, Benzophenon, Michlers Keton) praktisch unabhangigen Mengenverhaltnis von etwa 12 3 5. 

An interesting variant of the intiator system discussed is the combination of Michler ketone (4.4 -dimethylamino benzophenone, MK) and substituted benzo-phenones [103]. The triplet-state of MK (cj>isc = 0.91 in cyclohexane, 0.24 in i-propanol) is capable of forming an exciplex with the ground-state benzophenone. Again, similar reactions as outlined in Scheme 8 yield the Michler aminyl radical and diphenyl ketyl radical. Owing to their favorable light absorption up 3S0 to 430 nm, and the efficient radical formation, these combinations are widely used in practice. 

When the evolution of hydrogen sulfide ceases, the reaction vessel is opened and the brownish yellow, powdery material is transferred to a large porcelain dish and mixed with 3 liters water to dissolve out the salt. The dye is then filtered off and dissolved in about 1500 cc. water at 60°C. Higher temperatures should not be employed because aura-mine is easily decomposed. The solution is filtered to remove a small residue of sulfur and Michler ketone, and is then mixed with 1 liter of the salt solution obtained as the preceding filtrate. The auramine precipitates as lustrous golden plates. The yield of pure dye is about 155 grams. It gives pure yellow shades on cotton mordanted with tannin and tartar emetic. 

Victoria blue B from Michler ketone and phenyl-a-naphthylamine. 306... 

Some irreversible reactions quantitatively convert living polymers, but not dead ones, into unique products, detection of which is easily and quantitatively achieved. It is immaterial whether such a reaction proceeds with only one of the inter-convertible species or with all of them, as long as the inter-conversion is fast. The concentration of the resulting product measures then the total concentration of living polymers, whatever their state. For example, addition of Michler ketone to solutions of living poly-styrene converts their carbanionic groups into an alcohol readily oxidized to an intensely colored dye. The conversion is quantitative and applicable for analytic usage24. ... 

The Gilman test (38), a color test for the detection of a Grignard reagent, is performed on each preparation prior to its use in the synthesis of C-palmitic acid. First, 0.5 mL of the Grignard solution is treated at room temperature with an equal volume of a 1% solution of 4,4 -bis(di-methylamino)benzophenone (Michlers ketone) while shaking. The... 

Both the Japanese Synthetic Rubber Company and Nippon Zeon have reported that anionically prepared elastomers that are functionally terminated by active lithium can be chain terminated with Michler ketone, benzophenone, and a variety of enamide groups. Moreover, these chains can be terminated with silicone or tin metals. Chain end functionalization did not change the viscoelasticity of the polymer chains but rather dramatically improved the elastomer-filler interaction and, therefore, reduced its hysteretic properties. 

Michem Wax492. See Polytetrafluoroethylene Michler ketone. See Michler s ketone Michler s base. See Bis (p-dimethylaminophenyl) methane Michler s ethyl ketone. See4,4 -Bis (diethylamino) benzophenone Michler s hydride. See Bis (p-dimethylaminophenyl) methane Michler s ketone... 

Bis (p-(N,N-dimethylamino) phenyl) ketone Bis (4-(dimethylamino) phenyl) methanone Michler ketone p,p -Michler s ketone Tetramethyidiaminobenzophenone N,N,N N -Tetramethyl-4,4-diaminobenzophenone Classification Substituted aromatic ketone Empirical C17H20N2O Formula CO[C6H4N(CH3)2]2 Properties Wh. to greenish leaflets or blue powd. sol. in ethanol, acetone, benzene, pyrimidine very si. sol. in ether, diethyl ether pract. insol. in water m.w. 268.36 m.p. 172-176 C b.p. >360 C (dec.) flash pt. 220 C... 

Filter paper impregnated with thio-Michlers ketone... 

Fig. 1 Polymerization profiles of (A) trimethylolpropane triacrylate (TMPTA) using different photoinitiating systems (1) Irgacure 819 (0.5% w/w) or (2) Irgacure 819/(TMS)3SiH (0.5%/3% w/w) upon a LED(3385 nm exposure. (B) (3,4-Epoxycyclohexane)methyl 3,4-epoxycyclohexylcarboxylate (EPOX) using different photoinitiating systems (1) a Michler ketone derivative/iodonium salt or (2) a Michler ketone derivative/iodonium salt/(TMS)3SiH upon excitation by a laser diode at 532 nm. ...

Naphthalene, anthracene, biphenyl, benzophenone, Michler ketone, benzil... 

Pb(C2H5)4 does not react with tetramethyldiaminobenzophenone (Michler ketone) in benzene at 20 C the ketone was used as a test for Grignard reagents [19]. 

Figure 5.11 Structure and luminescence spectrum of coumarin-DTPA Eu complex [61] structure of Michler ketone, functionalised dipicamide [74] and bis-pyrazolyl-triazine ligands [75-77]...

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