A process for preparing (per)fluorohalogenethers containing the --SO.sub.2F group, having general formula (I): FSO.sub.2--R--CF.sub.2OCAF--CA'F.sub.2 (I) wherein: A and A', equal to or different from each other, are Cl or Br; R has the following meanings: a (per)fluorinated, preferably perfluorinated, substituent, optionally containing one or more oxygen atoms; by reaction of carbonyl compounds having formula (II): FSO.sub.2--R--COF (II) wherein R is as above; in liquid phase with elemental fluo...

4-aminodiphenylamine is prepared by reacting carbanilide and nitrobenzene in an adequate solvent, which may be nitrobenzene, in the presence of an appropriate organic base, which may be tetramethylammonium hydroxide, alone or in mixture with an inorganic base and subsequently reducing the reaction product in the presence of an appropriate catalyst and hydrogen gas. The subsequent reduction may be carried out on the reaction mixture before the reaction mixture is subjected to separation.

A method of preparing beer from beer wort including adding amidated pectin to the wort or beer to inhibit coagulation and precipitation of proteins and to obtain a haze in the beer.

The invention relates to a process for the direct synthesis of methylchlorosilanes by reaction of chloromethane with a contact composition comprising silicon, copper catalyst and a total proportion of sodium and potassium of from 10 to 400 ppm.

Disclosed are processes for preparing glycopeptide antibiotic derivatives having an amino-containing side chain. The multi-step process is conducted in a single reaction vessel without isolation of intermediate reaction products.

A process for the preparation of hydroquinone compounds comprising, reacting an aromatic hydroxy compound with an oxidizing agent in a biphasic solvent system. The reaction is carried out in the presence of a transition metal hydroxy phosphate catalyst to produce the corresponding hydroquinone compound.

The invention relates to a novel process for preparing phthaloyl chloride (benzene-1,2-dicarbonyl chloride) by reacting phthalic anhydride with phosgene in the presence of a specific N,N-disubstituted formamide as a catalyst.

A process is disclosed for modifying a parent ligand by attaching to the parent ligand a conjugation agent that is reactive with a moiety of a target receptor to which the parent ligand binds such that a covalent bond is formable between the conjugation agent and the receptor moiety. Also disclosed are compositions, probes and methods of detecting and/or quantifying receptors using the modified ligands of the invention.

The present invention discloses a process for the production of hydrogen peroxide from hydrazine hydrate or hydrazine salt, represented by a general formula: N.sub.2H.sub.4.nX, wherein, X is H.sub.2O, H.sub.2SO.sub.4, HNO.sub.3, HCl, HBr, HI or CH.sub.3COOH; n is 0.5, 1 or 2; N is nitrogen; H is hydrogen; S is sulfur; Cl is chlorine; Br is bromine; and I is iodine, by its liquid phase oxidation with oxygen, using a solid catalyst comprising palladium but with or without halogen promoter, in an a...

A process for preparing glycidylphtalimide or it optically active compound by reacting a phthalimide alkalimetal salt with an epihalohydrin or an optically active epihalohydrin in an alcohol solvent; or by reacting phthalimide with an epihalohydrin or an optically active epihalohydrin in the presence of an alkali metal carbonate, an alkali metal hydrogencarbonate or a quaternary ammonium salt to obtain a N-(3-halogeno-2-hydroxypropyl)phthalimide and then by cyclizing the product with an alkali m...