摘要:
The invention relates to a compound according to Formula (IX) and salts thereof, wherein R1, R2 and R5 are each independently selected from H and hydrocarbon moieties, which hydrocarbon moieties optionally comprise one or more heteroatoms, and which hydrocarbons optionally comprise substituents, or when the compound according to formula (IX) is a salt, R1 and/or R2 may be a cation, R3, and R4 each independently selected from hydrocarbon moieties, which hydrocarbon moieties optionally comprise one or more heteroatoms, and which hydrocarbons optionally comprise substituents, and wherein any two of R1, R2, R3, R4 and R5 are optionally linked together to form a ring structure. The invention further relates to the preparation of such a compound and to the use of such a compound for preparing a pharmaceutical compound, an agrochemical compound, an intermediate for a pharmaceutical compound or an intermediate for an agrochemical compound.
摘要:
A novel phenylalkanoic acid derivative represented by general formulae (I) or (II), a process for the production thereof, a method of separating optical isomers thereof, and an anti-inflammatory, analgesic or external preparation containing the same. In the said formulae, n represents an integer of 1 or 2; X represents halogen, alkoxy or nitro; R represents hydrogen or alkyl; and Z represents hydrogen or acyl.
摘要:
Es wird die Herstellung von chiralen Enaminen der allgemeinen Formel und der entsprechenden Aldehyde beschrieben, worin die Substituenten R, R¹ und R² die in der Beschreibung angegebenen Bedeutungen haben. Diese Herstellung erfolgt durch Isomerisierung einer in E- oder Z-Form vorliegenden Verbindung der allgemeinen Formel mit einem Rhodium-diphosphinkomplex unter Zusatz eines achiralen Triarylphosphins und gewünschtenfalls Hydrolyse der erhaltenen Verbindung der Formel I zum entsprechenden Aldehyd.
摘要:
Die Erfindung betrifft ein neues Verfahren zur Herstellung von Citral. Das erfindungsgemässe Verfahren ist dadurch gekennzeichnet, dass man eine Verbindung der Formel worin die Reste R 1 und R 2 gleich oder verschieden sind und für C 2-6 -Alkyl stehen bzw. zusammen mit dem N-Atom eine C 4-6 -cyclische Gruppe darstellen, mit einem Anhydrid einer C 2-6 -Alkancarbonsäure umsetzt.
摘要:
Optically active or racemic diazabicyclooctane derivatives of formula wherein A represents a C 6 -C 14 aryl group or a C 1 -C 4 alkyl or alkoxy group- or halogen-substituted C 6 -C 14 aryl group and R 3 represents a C 1 -C 4 alkyl group. These compounds can be prepared by reacting a glyoxylate ester or glyoxylate ester hemiacetal with a 2(-N-substituted aminomethyl)pyrrolidine, and can be used to prepare optically active and racemic α-hydroxyaldehydes which are important intermediates in the preparation of pharmaceuticals and agricultural chemicals.
摘要:
ABSTRACT The compounds of formula (I): where Ar is an aromatic ring and Ra, Rb, are as defined in the description, are useful in therapy as drugs for the treatment of diseases mediated by infiltrations of neutrophils induced by IL-8, such as psoriasis, rheumatoid arthritis, ulcerative cholitis and for the treatment of damages caused by ischemia and reperfusion.
摘要:
This invention relates to a process for the selective monochlorination or dichlorination of certain substituted alkenes using trichloroisocyanuric acid. The chlorinated alkenes can be easily hydrolyzed to provide α-monochloroketones or α,α-dichloroketones with a high degree of selectivity. The resulting α-monochloroketones or α,α-dichloroketones have utility as fungicides or function as useful intermediates for fungicides.