Formation of triphenylmethanol. In an oven dried vial, dissolve benzophenone (364 mg, 2 mmol) in 1 mL of anhydrous ether. With a dry 1 mL syringe, slowly add the solution to the reaction vessel containing the Grignard reagent, thus maintaining a gentle reflux. Rinse the benzophenone vial with a small amount of anhydrous ether and add this to the reaction tube also.
The Knoevenagel condensation has been used in the synthesis of different types of dyes. Thiophene derivatives (345), which may be useful for dyeing synthetic fibers or plastic, have been prepared by condensation of the azo aldehydes (344) with a variety of methylene compounds. 332 Dyes (347) exhibiting positive solvatochromatical and negative thermochromatical properties are prepared by.
The Synthesis of Lidocaine Introduction Lidocaine (trade names Lidothesin, Xylocain, Anestacon) is an important member of Class 1b drugs used as local anesthetics. Procaine, Isocaine, Procainamide, Tocainide, and Mexiletine are other members of this family of compounds. All of them have an amine functional group in common, which appears to be.
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William Blythe. Accrington. This essay contrasts a perspective that places an excessive focus. The combined effects of zinc stannate and aluminium diethyl phosphinate on the.
An intermolecular zinc-mediated and catalyzed hydrohydrazination reaction of alkynes, allows a general synthesis of substituted indoles (Cpd-48) (Alex, et al., 2008). Following these investigations, we discovered that the reaction of phenylhydrazine (Cpd-46) with 3-butynol (Cpd-47) in the presence of a stoichiometric amount of zinc chloride did not result in the expected indole motif.
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