Abstract:
The present invention concerns novel chemical compounds corresponding to formulae (I) and (II): (I) (II) which, when marked with fluorine-18, can be used as markers of NMDA receptors for carrying out studies with a scanner.
Abstract:
An actinic ray-sensitive or radiation-sensitive resin composition includes any of the compounds of general formula (I) below; wherein: Ar represents an aromatic ring that may have a substituent other than the -(A-B) groups; n is an integer of 1 or greater; A represents any one, or a combination of two or more members selected from a single bond, an alkylene group, —O—, —S—, —C(═O)—, —S(═O)—, —S(═O)2— and —OS(═O)2—, provided that —C(═O)O— is excluded; B represents a group containing a hydrocarbon group having 4 or more carbon atoms wherein either a tertiary or a quaternary carbon atom is contained, when n is 2 or greater, the two or more -(A-B) groups may be identical to or different from each other; and M+ represents an organic onium ion.
Abstract:
A sulfonium salt having a triphenylsulfonium cation and a sulfite anion within the molecule is best suited as a photoacid generator in chemically amplified resist compositions. Upon exposure to high-energy radiation, the sulfonium salt generates a sulfonic acid, which facilitates efficient scission of acid labile groups in chemically amplified positive resist compositions. Because of substantial non-volatility under high vacuum conditions in the EB or EUV lithography, the risk of the exposure tool being contaminated is minimized.
Abstract:
Disclosed is a novel sulphonic acid salt of sibutramine, which has good physicochemical properties. Also disclosed are a method of preparing the compound and a pharmaceutical composition comprising the compound.
Abstract:
N-(Triazoloazinyl)arylsulfonamide compounds, such as 2,6-dimethoxy-N-(8-chloro-5-methoxy[1,2,4]triazolo[1,5-c]pyrimidin-2-yl)benzenesulfonamide, 2-methoxy-4-(trifluoromethyl)-N-(5,8-dimethoxy[1,2,4]triazolo[1,5-c]pyrimidin-2-yl)pyridine-3-sulfonamide, and 2-methoxy-6-methoxycarbonyl-N-(5,8-dimethoxy[1,2,4]triazolo[1,5-a]pyridin-2-yl)benzenesulfonamide were prepared from appropriately substituted 2-amino[1,2,4]triazolo[1,5-c]pyrimidine and 2-amino[1,2,4]triazolo[1,5-a]pyridine compounds and appropriately substituted benzenesulfonyl chloride and pyridine-3-sulfonyl chloride compounds. The compounds were found to be useful as herbicides.
Abstract:
Phenylacetic acid derivatives of the formula I ##STR1## where the substituents and the index have the following meanings: X is NOCH.sub.3, CHOCH.sub.3, CHCH.sub.3 and [sic] CHCH.sub.2 CH.sub.3 ;R.sup.1 is hydrogen and [sic] alkyl;R.sup.2 is cyano, nitro, trifluoromethyl, halogen, alkyl and [sic] alkoxy;m is 0, 1 or 2, it being possible for the R.sup.2 radicals to be different if m is 2;R.sup.3 is hydrogen, cyano, nitro, hydroxyl, amino, halogen, alkyl, haloalkyl, alkoxy, haloalkoxy, alkylthio, alkylamino or dialkylamino;R.sup.4 and R.sup.5 are as defined in the specification.
Abstract:
N-(Triazoloazinyl)arylsulfonamide compounds, such as 2,6-dimethoxy-N-(8-chloro-5-methoxy[1,2,4]triazolo[1,5-c]pyrimidin-2-yl)benzenesulfonamide, 2-methoxy-4-(trifluoromethyl)-N-(5,8-dimethoxy[1,2,4]triazolo[1,5-c]pyrimidin-2-yl)pyridine-3-sulfonamide, and 2-methoxy-6-methoxycarbonyl-N-(5,8-dimethoxy[1,2,4]triazolo[1,5-a]pyridin-2-yl)benzenesulfonamide were prepared from appropriately substituted 2-amino[1,2,4]triazolo[1,5-c]pyrimidine and 2-amino[1,2,4]triazolo[1,5-a]pyridine compounds and appropriately substituted benzenesulfonyl chloride and pyridine-3-sulfonyl chloride compounds. The compounds were found to be useful as herbicides.
Abstract:
New compounds having the formula ##STR1## in which m is 1 or 2; when m is 1, A is a residue selected from those of the formulae ##STR2## and, when m is 2, A is a residue of the formula ##STR3## B is --O--, --NH-- or --SO.sub.2 --, and D is as defined herein, are useful as ultraviolet absorbing agents (UVAs) and a method of improving the sun protection factor of textile fibre material by treating the material with the new compounds.
Abstract:
Phenol sulphonate esters can be made in a known process by reacting an alkali metal phenol sulphonate salt with an acyl halide in a hydrocarbon solvent at elevated temperatures, but the use of anhydrous materials were strongly advocated because any residual water hydrolyses the acyl chloride in a competitive reaction. However, it becomes particularly difficult and expensive to dehydrate phenol sulphonate salts below about 2% w/w water on a commercial scale and the product obtained by reaction from such partly dehydrated salts can be comparatively impure or reduced in yield. Consequently, changes to the process such as omitting the solvent or using a different acylating agent have been proposed, but these alternatives introduce their own respective manufacturing problems such as entrainment of viscous acyl chloride and anhydride in the product or introduction of a cumbersome and hence expensive recovery process involving an extra distillation step amongst others.The present invention provides a surprisingly convenient modification to the known process in which the esterification and product separation steps are incorporated into a cycle together with an acyl halide preparation step in which residual carboxylic acid and anhydride in solution after product separation is preferably augmented with a replenishing amount of carboxylic acid and then reacted with thiony halide. The resultant ester is readily separable and is obtained in comparatively good yield.
Abstract:
Reactions of liquid starting substances to give chemical compounds in which these chemical compounds are obtained as solids can be carried out by spraying the liquid starting substances from separate nozzles such that the liquid starting substances are mixed in the spray cones, which penetrate one another, and thereby react.