2209-91-8Relevant articles and documents
A compound, said compound and catalyst solid catalyst component
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Paragraph 0062; 0063, (2018/02/04)
The invention discloses a compound with a novel structure. The structure of the compound is represented by formula (I); and in the formula (I), R1 to R4 can be same to or different from each other and are independently selected from substituted or non-substituted C1-C20 alkyl groups, and preferably substituted or non-substituted C1-C10 aliphatic groups, C3-C10 cycloalkyl groups, C6-C20 aryl groups and C7-C20 alkaryl groups, and R3 and R4 can be optionally connected to form a ring. The compound represented by formula (I) can be used as an internal electron donor compound to obtain a catalyst with excellent comprehensive performances. The catalyst can be used in olefin polymerization, especially propylene polymerization to obtain a satisfactory polymerization yield, has good hydrogen sensitivity and high stereospecificity, and is in favor of developing different types of polymers.
Synthesis of achiral α,α-disubstituted β-alanines, and their use in construction of libraries of β-peptide conjugates of N-2-alkyl-1,2,3,4- tetrahydroisoquinolines on a solid support
Heinonen, Petri,Virta, Pasi,Loennberg, Harri
, p. 7613 - 7624 (2007/10/03)
Six achiral N-phthaloyl protected α,α-disubstituted β-amino acids were synthesized, and used to construct a 96 compound library of 1,2,3,4- tetrahydroisoquinoline conjugates of β-peptides on a solid support. The library synthesis consisted of attachment of an appropriately 5-O-tethered 1,2,3,4-tetrahydroisoquinoline via the N-2 atom to a vinyl sulfonyl support, elongation of the deprotected 5-O-tether by repeated peptide coupling, quaternarization of N-2 with alkylamines and release of the β-peptide conjugate into solution with triethylamine.
