Brichima, S.p.a.

Zambon S.p.a.

Zambon Group

Polimeri Europa S.p.a.

Lonza Inc.

Montedison S.p.a.

Consiglio Nazionale Delle Ricerche

Anic S.p.a.

Enichem Synthesis S.p.a

Enichem Sintesi S.p.a.

Enicham Synthesis

Galvanevet S.p.a.

Francesco Minisci

Claudio Giordano

Mariano Correale

Paolo Maggioni

Attilio Citterio

Cristian Gambarotti

Laura Coppi

Carlo Punta

Francesco Recupero

Ombretta Porta

Raffaele Spaccini

Graziano Castaldi

Carlo Neri

Ugo Romano

Fulvio Uggeri

Edoardo Platone

Luciano Pallini

Silvia Cavicchioli

Aldo Belli

Elena Vismara

Silvia De Bernardinis

Carlo Fumagalli

Mariano Meneghin

Pietro Panseri

Giancarlo Serboli

Roberto Pirola

Giulio Perdoncin

Francesca Fontana

Anna Serri

Roberto Baima

Process for the preparation of hydroperoxides of alkylbenzenes characterized by the fact that the alkylbenzene reacts with oxygen in the presence of a catalytic system which includes an N-hydroxyimide or an N-hydroxysulfamide and a polar solvent.

Process for the production of alkylbenzene hydroperoxides under mild conditions and in the presence of new catalytic systems

Process for the preparation of hydroperoxides of alkylbenzenes characterized by the fact that the alkylbenzene reacts with oxygen in the presence of a catalytic system consisting of an N-hydroxyimide associated with a peroxide activator having a peracid or dioxyrane structure, possibly generated in situ.

Catalytic process for the preparation of hydroperoxides of alkylbenzenes by aerobic oxidation under mild conditions

Aliphatic carboxylic acids of formulae (Ib) R&#x2014;COOH(Ia) and R&#x2014;COOH wherein Ris tertiary C-alkyl and Rtogether are &#x2014;(CH)&#x2014; with n=3 to 10, are produced by oxidizing an aliphatic or alicyclic ketone of the formula (II):wherein Rand Rare as defined above, with molecular oxygen in the presence of a soluble manganese (II) compound. The process has a high selectivity and is carried out under very mild conditions. It is especially useful for the production of dicarboxylic acids, such as, adipic acid, from cyclic ketones.

Process for the production of carboxylic acids

1-pyridiniumpropane-3-sulphonate is obtained by reacting 1-allylpyridinium chloride (3) and alkaline bisulfite, in an aqueous solution, in the presence of radical initiators, such as oxygen, hydrogen peroxide, peroxides, alkylhydroperoxides and alkaline or ammonium persulfates.

Process for the synthesis of 1-pyridiniumpropane-3-sulphonate

A process for the preparation of 5-(2,4-difluorophenyl)-salicylic acid comprising the reaction of an organometallic derivative with a suitable substituted benzene in the presence of a transition-metal based catalyst is described.

Process for the preparation of 5-(2,4-difluorophenyl)-salicylic acid

Phenols are oxidated to quinones with hydrogen peroxide in the presence of catalytic amounts of bromine, iodine, hydrogen bromide and hydrogen iodide.

Process for the preparation of quinones

A stereoselective process is described for preparing optically active alpha,beta-disubstituted carbonyl compounds, comprising forming an acetal between an alpha,beta-unsaturated aldehyde or ketone and tartaric acid or a derivative thereof, halogenating the product thus obtained, and restoring the carbonyl compound.

Stereoselective process for preparing optically active alpha,

Mono-ethers of hydroquinones of formula (I) ##STR1## wherein R represents alkyl, alkoxy-alkyl, cycloalkyl, aryl-alkyl, or cycloalkyl-alkyl, and

Process for the preparation of mono-ethers of hydroquinones

A process for the production of benzofuran derivatives having the general formula, ##STR1## wherein R is alkyl, in particular of 2,3-dihydro-2,2-dimethyl benzofuran-7-ol, starting from pyrocatechol ethers in one step operation. The process essentially consists of heating a solution of pyrocatechol ether in an inert organic solvent in the presence of a catalyst comprising metals of 3.degree. and 4.degree. group of the Periodic System in form of carboxylates or of modified zeolites. The products are known intermediates for the production of insecticides.

Process for the production of certain 2,3-dihydro-benzofuran derivatives

A process is described for the preparation of alpha-hydroxyl-alkanoic acids of formula ##STR1## which are known anti-inflammatory agents or intermediates for known pharmaceutical products. The process consists essentially in the rearrangement of phenolates of formula ##STR2## wherein Ar is an unsubstituted or substituted phenyl or naphthyl, in aqueous environment or in an organic medium, at temperatures comprised within the range of from 0.degree. to 100.degree. C. and within short times, followed by either acid or alkaline hydrolysis.

Process for the preparation of alpha-hydroxyaryl-alkanoic acids

A process for preparing o-isopropoxyphenol (I) by means of the reaction: ##STR1## in which X is a halogen atom and in which the pyrocatechol (II) is reacted with the isopropyl halide (III) in the presence of an alkaline base in the solid state and of a solid-liquid phase transfer catalyst, in a reaction medium constituted by one or more organic solvents. The catalyst is constituted by a quaternary ammonium or phosphonium salt. The reaction is conducted in a nitrogen atmosphere, at atmospheric pressure, under agitation, at a temperature of preferably between 50.degree. C. and 130.degree. C.

Process for the synthesis of o-isopropoxyphenol

A process is described for preparing 2,3-dihydro-2,2-dimethylbenzofuran-7-ol (I), which is a useful intermediary in the preparation of Carbofuran, a known multi-functional insecticide. The process consists essentially of reacting the pyrocatechol and a methallylhalide in an inert organic solvent in the presence of a solid inorganic base and a suitable catalyst, to obtain o.methallyloxyphenol with high conversion and high selectivity; this product is thermally transposed to o.methallylpyrocatechol, which is finally cyclized to the product (I) by heterogeneous catalysis in the presence of solid acid catalysts. All stages of the process can be carried out in a single reaction medium, without separating intermediate products.

Process for preparing 2,3-dihydro-2,2-dimethylbenzofuran-7-ol

Process to reduce stereoselectively 3alpha-hydroxy-7-keto-5beta-cholanic acid to 3alpha,7beta-dihydroxy-5beta-cholanic acid in ter.alcohols by using, as reducing agent, sodium metal in the presence of other metal salts. Examples of metal salts particularly useful are: potassium, cesium and rhubidium organic salts and, more particularly, potassium acetate or potassium ter.butylate.

Process for preparing 3alpha, 7beta-dihydroxy-5beta-cholanic acid

A process for the selective side-chain halogenation of alkylaromatic hydrocarbons, consisting of reacting the hydrocarbon with an N-halogenoamine in the presence of a proton donor and a metal ion.

Process for the side-chain polyhalogenation of polyalkylaromatic

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Francesco Minisci