Synthesis of Nitrobenzene and Aniline - Erowid

The Reaction of Dess-Martin Periodinane with Anilides and Related Compounds, Angew.

Synthesis of p-Nitroaniline from Aniline

A chemical reaction in which a Bromine atom (Br) is introduced into another molecule is called Bromination. Acetanilide can be brominated by reacting it with Bromine atoms. Following is the equation for this chemical reaction:

Synthesis description for preparation of ACETANILIDE

Sn-MFI molecular sieves (Tin silicalite-1) with SiO2/SnO2 molar ratio of 50–150 were synthesized and characterized. Elemental analysis, XRD and DRUV–vis confirmed that prepared samples were of MFI zeolite structure and Sn was incorporated in MFI framework. Vapor phase methylation of aniline over Sn-MFI was systematically studied and optimizations of process parameters were carried out. Sn-MFI (SiO2/SnO2 = 50) was found to be optimum catalyst with 55% aniline conversion and 60% N-methylaniline selectivity. At lower space velocity (higher contact time) of 1 h−1, aniline conversion was found to be increased to 71% with reduction in N-methylaniline selectivity to 39% and increased in N,N-dimethylaniline selectivity to 58%. The reaction follows first order kinetics with respect to aniline having activation energy of 7.3 kcal/mol.

The condensation of aniline and cyclohexanol (cyclohexanone) yielding intermediates and the subsequent dehydrogenation of these intermediates into diphenylamine have been studied. The mechanism of diphenylamine synthesis is substantiated. The kinetics of diphenylamine synthesis from aniline and cyclohexanol over a NiSnMg catalyst has been studied. A kinetic model in terms of the conversion of strongly chemisorbed species has been developed. The rate constants of diphenylamine synthesis at 260–300°C have been determined, which are consistent with the observed regularities. The kinetic model can be used in the determination of optimal synthetic conditions and in the design of a reactor for diphenylamine synthesis from aniline and cyclohexanol. Conditions have been found under which diphenylamine synthesis occurs at a high rate of up to 1 kg/(1h), with high selectivity, and with a high yield of up to 95%.


The preparation of acetanilide from aniline.

The synthetic dye industry grew rapidly as new aniline-based dyes were discovered in the late 1850s and 1860s. These new colors were not only relatively easy to produce, but were quite bright, even garish. The muted dyestuffs of earlier decades gave way to bright prints. Mauve was found to fade very easily–when first applied it is a bright purple, and only after fading is it the light, lavender color that we associate with the name. And mauve gave its name to an entire decade – the 1890s. Purple had once been the rarest and most difficult dye to prepare; Tyrian purple was prepared from the secretions of a predatory sea snail, and was incredibly expensive. With mauve, anyone could afford purple, a color once limited to kings.

The Synthesis of 4-(morpholinosulfonyl) aniline by …

T1 - Palladium-catalyzed synthesis of oligo(methylthio) aniline and conversion to polyacene-type electrolytes bearing phenothiazinium repeating units

ASR was synthesized by reacting sulfide dichloride with aniline

N2 - The synthetic routes to ladder polymers which consist of benzenetetrayl subunits with imino and methyl-sulfonio linkages are described. As the key intermediate, oligo- and polyaniline derivatives having pendant methylthio groups are prepared by the Pd-catalyzed aryl amination from various monomers. The Oxidation of the polymers with H2O2 in the presence of CH3COOH effects the high yielding conversion of methylthio to methylsulfinyl groups without the formation of the undesired methylsulfonyl groups. The superacid-induced condensation of the resulting polymers under dilution conditions induced the polymer-analogous intramolecular electrophilic ring closure reaction of the hydroxy(methyl)(phenyl)sulfonium cation onto the adjacent benzene ring to yield the required ladder polymers which have proved to be semiconductors with intrinsic electric conductivities of ca. 10-5 S · cm-1.

Synthesis of Benzanilide - Chempedia - LookChem

AB - The synthetic routes to ladder polymers which consist of benzenetetrayl subunits with imino and methyl-sulfonio linkages are described. As the key intermediate, oligo- and polyaniline derivatives having pendant methylthio groups are prepared by the Pd-catalyzed aryl amination from various monomers. The Oxidation of the polymers with H2O2 in the presence of CH3COOH effects the high yielding conversion of methylthio to methylsulfinyl groups without the formation of the undesired methylsulfonyl groups. The superacid-induced condensation of the resulting polymers under dilution conditions induced the polymer-analogous intramolecular electrophilic ring closure reaction of the hydroxy(methyl)(phenyl)sulfonium cation onto the adjacent benzene ring to yield the required ladder polymers which have proved to be semiconductors with intrinsic electric conductivities of ca. 10-5 S · cm-1.