The title compounds were designed to provide semirigid congeners of m-tyramine in which the ring position ortho to the phenolic OH is blocked to metabolic hydroxylation. A sequence leading to a key synthetic intermediate, 5-methoxy-6-methyl-2-tetralone, has been developed. In animal test models for dopamine-like effects, the title compounds demonstrated qualitative and quantitative differences from the isomeric 5-methyl-6-hydroxy-2-aminotetralins and from 5,6-dihydroxy-2-aminotetralins. Two of the compounds were potent in a cat cardioaccelerator nerve assay, which involves dopamine receptors.
The title compounds were designed to provide semirigid congeners of m-tyramine in which the ring position ortho to the phenolic OH is blocked to metabolic hydroxylation. A sequence leading to a key synthetic intermediate, 5-methoxy-6-methyl-2-tetralone, has been developed. In animal test models for dopamine-like effects, the title compounds demonstrated qualitative and quantitative differences from the isomeric 5-methyl-6-hydroxy-2-aminotetralins and from 5,6-dihydroxy-2-aminotetralins. Two of the compounds were potent in a cat cardioaccelerator nerve assay, which involves dopamine receptors.
Come full circle: A method for the nucleophilic amination of methoxy arenes was established by using sodium hydride (NaH) in the presence of lithium iodide (LiI). This method offers an efficient route to benzannulated nitrogen heterocycles. Mechanistic studies showed that the reaction proceeds through an unusual concerted nucleophilicaromaticsubstitution.
Catalyst components for the polymerization of olefins
申请人:Basell Poliolefine Italia S.r.l.
公开号:EP2583985A1
公开(公告)日:2013-04-24
Catalyst component for the polymerization of olefins comprising Mg, Ti and an electron donor compound of the following formula (I)
In which
R to R4 groups, equal to or different from each other, are hydrogen, halogen or C1-C15 hydrocarbon groups, optionally containing an heteroatom selected from halogen, P, S, N and Si, which may be linked to form a saturated or unsaturated mono or polycycle and R5 groups, are selected from C1-C15 hydrocarbon groups optionally containing an heteroatom selected from halogen, P, S, N and Si.
用于烯烃聚合的催化剂组分,由 Mg、Ti 和下式 (I) 的电子供体化合物组成
其中
R 至 R4 基团(彼此相等或不同)为氢、卤素或 C1-C15 烃基,可选择含有选自卤素、P、S、N 和 Si 的杂原子,它们可连接形成饱和或不饱和单环或多环及 R5 基团,可选择含有选自卤素、P、S、N 和 Si 的杂原子的 C1-C15 烃基。
CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS
申请人:Basell Poliolefine Italia S.r.l.
公开号:EP2768873A2
公开(公告)日:2014-08-27
US8921253B2
申请人:——
公开号:US8921253B2
公开(公告)日:2014-12-30
[EN] CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS<br/>[FR] CONSTITUANTS DE CATALYSEUR POUR LA POLYMÉRISATION D'OLÉFINES
申请人:BASELL POLIOLEFINE SRL
公开号:WO2013057026A2
公开(公告)日:2013-04-25
Catalyst component for the polymerization of olefins comprising Mg, Ti and an electron donor compound of the following formula (I) In which R to R4 groups, equal to or different from each other, are hydrogen, halogen or C1-C15 hydrocarbon groups, optionally containing an heteroatom selected from halogen, P, S, N and Si, which may be linked to form a saturated or unsaturated mono or polycycle and R5 groups are selected from C1-C15 hydrocarbon groups optionally containing an heteroatom selected from halogen, P, S, N and Si.