摘要:
A process is disclosed for the preparation of derivatives of perfluoroalkanecarboxylic acids and perfluoroalkanesulphinic acids by reacting a perfluoroalkylhalide having the general formula R.sub.F X, in which X represents an atom of chlorine, bromine, or iodine, and R.sub.F represents an unbranched or branched perfluorinated chain containing from 2 to 12 carbon atoms; with CO.sub.2 or SO.sub.2 in a solvent medium and in the presence of activated or unactivated zinc.
摘要:
The present invention relates to a series of new compounds, their salts and esters and to methods for the preparation of the compounds having the general formula:
IN WHICH R1 represents a straight or branched C1-C6 alkyl, alkenyl or alkynyl radical, or a C1-C3 alkyl radical substituted with phenyl, halophenyl, trifluoromethylphenyl, (lower alkoxy)phenyl, or with a 5-membered or 6-membered heterocyclic ring containing not more than two heteroatoms selected from the group consisting of oxygen, sulphur and nitrogen; R2 stands for a phenyl radical, optionally being substituted with halogen, lower alkyl, hydroxy, or lower alkoxy; X stands for oxygen, sulphur or C O; Y stands for oxygen, sulphur or a methylene radical. The compounds of the invention which are valuable in the human and veterinary practice, possess an outstanding diuretic and saluretic activity.
摘要:
Sulphones of the formula QSO2CH C(CH3)-CH CH2 wherein Q represents an optionally substituted, saturated or unsaturated terpene radical of 5n carbon atoms, n being 1-9, apart from 3methylbutadienyl and 2-butadienylmethyl, are intermediates for adding isoprene units. They are made from novel alkali metal 2methylbutadienylsulphinates.
摘要:
A process for the preparation of a class of molecules, namely bicyclo[1.1.1]pentanes and derivatives thereof by reaction of [1.1.1]propellane with a variety of reagents under irradiation and/or in the presence of radical initiators to obtain bicyclo[1.1.1]pentanes asymmetrically substituted at position 1 and 3, which are useful as intermediates for the preparation of asymmetrically 1,3-disubstituted bicyclo[1.1.1]pentane derivatives and various physiologically active substances or materials containing these structures.
摘要:
A process of in situ forming a dye discharge reagent on at least a portion of surface of a dyed substrate, effected by applying two or more compositions comprising reactants on the substrate, such that the reactants undergo a chemical reaction on the substrate to form the reagent is provided herein, as well as a method for dye discharging a dyed substrate using the process of in situ forming a dye discharge reagent, and a dye discharge composition comprising said dye discharge reagent. In some embodiments of the invention, the reactants are thiourea and a peroxide, and the dye discharge reagent is formamidine sulfinic acid (FSA).
摘要:
The compositions and compounds of Formula I which includes a salt of duloxetine or its polymorphs, enantiomers, stereoisomers, solvates, and hydrates thereof. These salts may be formulated as pharmaceutical compositions. The pharmaceutical compositions may be formulated for oral, buccal, rectal, topical, transdermal, transmucosal, intravenous, parenteral administration, syrup, or injection. Such compositions may be used to treatment of major depressive disorder, general anxiety disorder, urinary incontinence, painful peripheral neuropathy, diabetic neuropathy, fibromyalgia, and chronic musculoskeletal pain associated with osteoarthritis and chronic lower back pain.