摘要:
The present invention relates to a catalyst composition comprising the compound represented by Formula (I) as an internal electron donor, Formula I wherein: R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are the same or different and are independently selected from a group consisting of hydrogen, straight, branched and cyclic alkyl and aromatic substituted and unsubstituted hydrocarbyl having 1 to 20 carbon atoms; R 7 is selected from a group consisting of straight, branched and cyclic alkyl and aromatic substituted and unsubstituted hydrocarbyl having 1 to 20 carbon atoms; and R 8 is selected from a group consisting of aromatic substituted and unsubstituted hydrocarbyl having 6 to 20 carbon atoms; N is nitrogen atom; O is oxygen atom; and C is carbon atom. The present invention also relates to a process for preparing said polymerization catalyst composition and to a polymerization catalyst system comprising said catalyst composition, a co-catalyst and optionally an external electron donor. Furthermore, the present invention relates to a polyolefin obtainable by the process according to the present invention and to the use of the compound of Formula I as in internal electron donor in catalysts for polymerization of olefins.
摘要:
The present disclosure provides compounds that function as modulators of mitochondrial aldehyde dehydrogenase-2 (ALDH2) activity, and methods of preparing these compounds.
摘要:
Disclosed are general and "substantially pure" branched discrete polyethylene glycol constructs useful in attaching to a variety of biologically active groups, for example, preferential locators, as well as biologies like enzymes, for use in diagnostics, e.g. imaging, therapeutics, theranostics, and moieties specific for other applications. In its simplest intermediate state, a branched branched discrete polyethylene glycol construct is terminated at one end by a chemically reactive moiety, "A", a group that is reactive with a biologic material that creates "A", which is a biologically reactive group, connected through ~~~~~~ to a branched core (BC) which has attached at least two dPEG-containing chains, indicated by the solid line, ——, having terminal groups, which can be charged, non-reactive or reactable moieties and containing between about 2 and 64 d PEG residues.
摘要:
A method for treating a p62-mediated disease (e.g., multiple myeloma) in a subject, the method comprising administering to the subject a therapeutically effective amount of at least one p62-ZZ inhibitor compound.
摘要:
The present invention describes a process for the synthesis of a iodinating agent, being said iodinating agent iodine chloride (ICI.) In particular, the present invention relates to a process for the electrochemical preparation of ICI, as a useful iodinating agent in the preparation of iodinated organic compounds for use as contrast agents or their precursors in the synthesis of the same.
摘要:
The present invention relates to a process for the preparation of iodinatedphenols; in particular, it relates to a process including the electrochemical iodination of 3,5- disubstituted phenols of formula (1) to the corresponding 3,5-disubstituted-2,4,6- triiodophenols of formula (2), which are useful intermediates for the synthesis of x-ray contrast media, and to the preparation of the contrast media themselves.
摘要:
The present invention relates to a novel and improved process for the preparation of N-[4-[2-(dimethylamino)ethoxy]benzyl]-3,4-dimethoxybenzamide-known as Itopride, via a novel intermediate N-(4~hydroxybenzyl)-3,4-dimethoxybenzamide.