- A compound, said compound and catalyst solid catalyst component
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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.
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Paragraph 0062; 0063
(2018/02/04)
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- AB3 building blocks for the synthesis of polyester dendrimers
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Syntheses of several examples of a new type of trivalent building blocks for the preparation of aliphatic polyester dendrimers are presented. Starting from the well-known mono-O-benzylidenepentaerythritol, AB3 type acid dendrons can be obtained
- Twibanire, Jean-D'Amour K.,Huestis, Malcolm P.,Grindley, T. Bruce
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p. 3436 - 3439
(2014/06/09)
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- 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
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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.
- Heinonen, Petri,Virta, Pasi,Loennberg, Harri
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p. 7613 - 7624
(2007/10/03)
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- SYNTHESIS OF 5,5-BIS(ALKOXYMETHYL)-1,3-DIOXANES
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5,5-Bis(alkoxymethyl)-1,3-dioxanes were synthesized from 3,3-bis(chloromethyl)oxacyclobutane.Of the two possible versions, differing in the order of the stages, the production of 3,3-bis(alkoxymethyl)oxacyclobutane and its subsequent condensation with the
- Kireev, I. R.,Kantor, E. A.,Valitov, R. B.,Rakhmankulov, D. L.
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p. 1366 - 1368
(2007/10/02)
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