摘要:
A process for the manufacture of a haloaryl compound which comprises contacting a mixture of dihalodiarylsulfone isomers [mixture (M)] with sulfuric acid to provide a mixture of haloarylsulfonic acid isomers [mixture (M1)] and reacting mixture (M1) in the presence of water. The process is independent on the manufacturing process of mixture (M) and is advantageous in that the obtained haloaryl compound can be recycled to the first step of a dihalodiarylsulfone manufacturing process.
摘要:
The present invention relates in general to a compound which is characterized by a formula selected from the following formulas A, B, C, D, E or F; or a pharmaceutically acceptable salt thereof. The present invention further relates to pharmaceutical composition comprising the inhibitor(s) of the invention and to their use in the treatment of (for treating) a disease which is associated with an excess transport of hyaluronan across a lipid bilayer. The present invention furthermore relates to the use of at least one inhibitor of the invention for the preparation of a pharmaceutical composition for the treatment of (for treating) a disease which is associated with an excess transport of hyaluronan across a lipid bilayer. The present invention also relates to a method for manufacturing a pharmaceutical composition comprising the steps of formulating the inhibitor defined herein in a pharmaceutically acceptable form.
摘要:
A process for the sulfonation of an aromatic compound wherein the aromatic compound and sulfonating agent are admixed in the presence of an ionic liquid is described. The method for the sulfonation of aromatic compounds in (e.g. water stable) ionic liquids offers advantages over conventional sulfonation reactions. These are that no by-products formed, the ionic liquid is not consumed and the sulfonating agent (e.g. SO3) is relatively inexpensive.
摘要:
Oligonucleotides and other biomolecules are immobilized in high density on solid substrates through covalent forces using either a permanent thioether bond, or a chemoselectively reversible disulfide bond to a surface thiol. Substrates which have hydroxyl groups on their surfaces can be first silanized with a trichlorosilane containing 2-20 carbon atoms in its hydrocarbon backbone, terminating in a protected thiol group. The oligonucleotides or other biomolecules are first connected to a tether consisting of a hydrocarbon or polyether chain of 2-20 units in length which terminates in a thiol group. This thiol may be further modified with a halobenzylic-bifunctional water soluble reagent which allows the conjugate to be immobilized onto the surface thiol group by a permanent thioether bond. Alternatively, the oligonucleotide-tether-thiol group can be converted to a pyridyldisulfide functionality which attaches to the surface thiol by a chemoselectively reversible disulfide bond. The permanently bound oligonucleotides are immobilized in high density compared to other types of thiol functionalized silane surface and to the avidin-biotin method.
摘要:
A process for sulfonating at least one halobenzene with sulfur trioxide (SO 3 ) comprising the following steps : Step 1. manufacturing a gaseous mixture [mixture (M)] comprising SO 3 and at least one additional gas different from SO 3 by oxidizing sulfur dioxide in the presence of at least one catalyst, wherein the SO 3 content in mixture (M) is from 1 to 95 % by volume, relative to the total volume of mixture (M); and Step 2. contacting said mixture (M) with said at least one halobenzene.
摘要:
Die Erfindung betrifft ein Verfahren zur Herstellung von 4-Chlorbenzolsulfonsäure aus 2-Chlorbenzolsulfonsäure und/oder 3-Chlorbenzolsulfonsäure umfassend die Umsetzung von 2-Chlorbenzolsulfonsäure und/oder 3-Chlorbenzolsulfonsäure zu 4-Chlorbenzolsulfonsäure in Gegenwart von Schwefelsäure bei einer Temperatur von 100 bis 300°C. Darüber hinaus betrifft die vorliegende Erfindung ein Verfahren zur Herstellung von 4,4'-Dichlordiphenylsulfon umfassend das genannte Verfahren zur Herstellung von 4-Chlorbenzolsulfonsäure.
摘要翻译:本发明涉及一种从2-氯苯磺酸和/或3-氯苯磺酸,它包括在100至300℃的温度下反应在硫酸的存在下2-氯苯磺酸和/或3-氯苯磺酸4-氯苯磺酸制备的4-氯苯磺酸 C. 此外,本发明涉及一种制备4,4'-二氯二苯包括用于制备4-氯苯磺酸,所述过程的过程。