摘要:
Improved processes for preparing intermediates useful for preparing antibacterial N-[1-oxo-2-alkyl-3-(N-hydroxyformamido)-propyl}-(carbonylamino-aryl or -heteroaryl)-azacyclo4-7alkanes or thiazacyclo4-7alkanes, which have one or more of the following features : (1) make use of a particular β-lactam intermediate; (2) which make use of a particular resolving agents, enantiomerically pure substituted propionic acids, especially (R)-2-butyl-3-hydroxy-propionic acid; (3) which avoid the use of hydrogen peroxide; and (4) which facilitate selective debenzylation reducing production of waste by-products. See Formula (I).
摘要:
The present invention relates to a new one-pot process for the preparation of functionalized alkoxyamine initiators of the formula (I) from amines of the formula (II) and to a process of controlled radical polymerization using the functionalized alkoxyamine as initiators. In the above formulae, R 1 -R 5 have the meanings given in the description.
摘要:
Primary intermediates for hair coloring compositions for oxidative of hair are compounds of the formula (1): where R1 and R2 are each individually selected from a hydrogen atom, a C1 to C3 alkyl group, a C1 to C5 mono or dihydroxyalkyl group; phenyl or benzyl optionally substituted with an alkoxy group, or R1 and R2 together with the nitrogen atom to which tey are attached form a piperazine, piperidine, imidazole, or morpholine ring.
摘要:
Processes for the controlled radical polymerization of acrylic and related polymers to produce low VOC coating materials, or powder coating compositions, the polymers so produced, the catalyst systems employed, processes for application of the coatings , coatings so produced and objects coated on at least one surface with the coatings are disclosed.
摘要:
Compounds having the formula are methionine aminopeptidase type 2 (MetAP2) inhibitors and are useful for inhibiting angiogenesis. Also disclosed are MetAP2-inhibiting compositions and methods of inhibiting angiogenesis in a mammal.
摘要:
Compounds of formula (I): R1CH2(OR2)ONH2, wherein R1 is hydrogen or methyl and R2 is a C1-C6 alkyl group, or a salt thereof are useful as reagents for the synthesis of biologically active hydroxyaminocarbonyl- and N-formyl-N-hydroxylamino- containing compounds.
摘要:
The invention relates to herbicidally active cyclohexenone oxime ether metal salts of formula (I), in which Rn is C1-Cn-alkyl and Rb is the equivalent of an alkali metal, an alkaline earth metal or a transition metal. The claimed salts have particularly good properties with respect to storage stability and temperature stability, susceptibility to moisture or biological action.
摘要:
Methoxyiminoacetamide derivatives represented by general formula (I), exhibiting negative specific rotations in chloroform, and having an extremely excellent pesticidal activity, wherein Ar is aryl or heteroaryl; Y is hydrogen, halogeno, C1-C4 alkyl, C1-C4 haloalkyl, C1-C4 alkoxy, C1-C4 haloalkoxy, C1-C4 alkylthio, C2-C6 alkynyloxy, cyano, nitro or aryl; and n is an integer of 1 to 3.
摘要:
A novel and practically excellent process for preparing optically active compounds, such as optically active alcohols or amines, useful for various applications of, for example, synthetic intermediates of pharmaceuticals, liquid crystalline materials, and reagents for optical resolution, wherein a hydrogen transfer type asymmetric reduction is carried out in the presence of both a transition metal complex and an optically active nitrogen compound or a transition metal complex having an optically active nitrogen compound as an asymmetric ligand, and a hydrogen-donating organic or inorganic compound. Further, optically active secondary alcohols are prepared from racemic secondary alcohols or meso-diols by a hydrogen transfer oxidation.