Copper‐Catalyzed Cross‐Dehydrogenative Phosphorylation of 2‐Amino‐1,4‐naphthoquinones with
H
‐Phosphonates
摘要:
AbstractAs a simple and efficient system, Cu(OAc)2 ⋅ H2O and K2S2O8 can activate H‐phosphonates to produce the corresponding dialkyl phosphoryl radicals. The obtained dialkyl phosphoryl radicals react smoothly with 2‐amino‐1,4‐naphthoquinones, affording accurate preparation of various phosphoryl‐functionalized 2‐amino‐1,4‐naphthoquinones. The developed copper‐catalyzed cross‐dehydrogenative phosphorylation features broad substrate scope, easily available reagents, high atom economy and operational simplicity, which enables a practical avenue for C−P bond formation.
Oxidative free radical reactions between 2-amino-1,4-naphthoquinones and carbonyl compounds
作者:Yi-Lung Wu、Che-Ping Chuang、Pi-Yun Lin
DOI:10.1016/s0040-4020(01)00480-x
日期:2001.6
initiated oxidative free radical reaction provides a novel method for the synthesis of benzo[f]indole-4,9-diones from 2-amino-1,4-naphthoquinones and carbonyl compounds. The regioselectivity of this reaction was also studied with unsymmetrical ketones from which both isomeric indoles 10 and 11 were formed. With α-halo, α-phenoxy and α-methanesulfonyl ketones, in most cases, this reaction gave high
锰(III)引发的氧化自由基反应提供了一种从2-氨基-1,4-萘醌和羰基化合物合成苯并[ f ]吲哚-4,9-二酮的新方法。还用不对称酮研究了该反应的区域选择性,所述不对称酮由其形成异构体吲哚10和11。在大多数情况下,对于α-卤代,α-苯氧基和α-甲磺酰基酮,该反应具有很高的区域选择性。用2-烷基取代的1,3-二酮14,获得吲哚11作为唯一产物。
[EN] AMINO-QUINONE ANTIPOLYMERANTS AND METHODS OF USING<br/>[FR] AGENT D'ANTIPOLYMÉRISATION À BASE D'AMINO-QUINONE ET PROCÉDÉS D'UTILISATION
申请人:ECOLAB USA INC
公开号:WO2020068735A1
公开(公告)日:2020-04-02
Described are methods and composition for inhibiting polymerization of a monomer (e.g., styrene) composition using an aminated quinone antipolymerant, such as an aminated benzoquinone or aminated naphthoquinone antipolymerant having one or more secondary or tertiary amine group(s). The aminated quinone antipolymerant can be used with little or no nitroxyl group containing antipolymerant yet still provide excellent antipolymerant activity in a monomer-containing composition.
Molecular association of 2-( n -alkylamino)-1,4-naphthoquinone derivatives: Electrochemical, DFT studies and antiproliferative activity against leukemia cell lines
and LH-8 showed intermolecular N-H⋯O and C-H⋯O interactions, LH-3 showed unique C(3)-H(3)⋯O(1) interaction. Interchain π-π stacking, slipped π-π stacking and C⋯O close contacts was respectively observed in LH-3, LH-4 and LH-8. Electrochemical studies were performed on first eight members of homologousseries of 2-(n-alkylamino)-1,4-naphthoquinone (LH-1 to LH-8) by cyclic voltammetry. Naphthoquinone
The first Fe-catalyzed three-component radical trifluoromethyl-alkenylation of alkenes with 2-amino-1,4-naphthoquinones and CF3SO2Na is reported. The developed reaction enables the highlyregioselective preparation of a variety of valuable CF3-substituted 1,4-naphthoquinones in acceptable yields. In the light of the catalytic system, alkynes smoothly afford the corresponding three- or four-component
报道了第一个 Fe 催化的烯烃与 2-氨基-1,4-萘醌和 CF 3 SO 2 Na 的三组分自由基三氟甲基烯基化反应。所开发的反应能够以可接受的收率高度区域选择性地制备各种有价值的 CF 3 -取代的 1,4-萘醌。根据催化体系,炔烃可以顺利地提供相应的三或四组分三氟甲基-烯基化产物。该协议的特点是使用容易获得且价格低廉的试剂、广泛的底物范围和简单的反应条件。