Synthesis of hindered alkyl aryl ether derivatives (R–O–Ar) remains a huge challenge and highly desirable in organic and medicinal chemistry because extensive substitution on the ether bond prevents the undesired metabolic process and thus avoids rapid degradation in vivo. Herein, we report an unprecedented hindered alkoxylation of picolinamide attached aromatic amines using economic copper salt and
Silver(I) Promoted the C4–H Bond Phosphonation of 1-Naphthylamine Derivatives with H-Phosphonates
作者:Lixiao Zhao、Mengmeng Sun、Fan Yang、Yangjie Wu
DOI:10.1021/acs.joc.1c00971
日期:2021.9.3
A simple and efficient protocol for silver-promoted direct C–H phosphonation of 1-naphthylamine derivatives with H-phosphonates was described. This reaction proceeded smoothly for 1-naphthylamine derivatives at the C4 site, providing a facile and efficient route to 4-phosphonated 1-naphthylamine derivatives. This phosphonation could tolerate a diverse type of functional groups at the pyridinyl and
Iron(III)-catalyzed regioselective direct remote C–H carboxylation of naphthyl and quinoline amides was developed using CBr4 and alcohol. The reaction involves a radical pathway using a coordination activation strategy and single electron transfer process. The use of sustainable iron catalysis, selectivity, and the substrate scope are the important practical features.
A simple and practical copper catalyzed C‐4 carboxylation reaction of 1‐naphthylamide derivatives using carbon tetra bromide and methanol is reported here. Picolinamide and its derivatives are used as a bidentate directing group for the distal C4‐H functionalization. Various substituted naphthylamide derivatives, and anilides are employed for the carboxylation and proceeds in good yields under mild
A novel and facile copper-catalyzed synthetic methodology was developed to access a large variety of 4-phosphoryl-substituted 1-naphthylamines by reacting various 1-naphthylamines with different diarylphosphine oxides in the presence of Cu(OAc)2 and Ag2CO3 in one pot under mild reaction conditions. This copper-catalyzed synthetic system was also suitable for being employed to synthesize 4-trifluoromethyl-substituted
在Cu(OAc)2和Ag 2 CO 3的存在下,通过使各种1-萘胺与不同的二芳基膦氧化物反应,开发了一种新颖且简便的铜催化合成方法,以获取多种4-磷酰基取代的1-萘胺。一锅在温和的反应条件下。该铜催化的合成系统也适合用于在温和的反应条件下,在DMSO中,在CuI和NaOAc中,在CuI和NaOAc存在下,使各种1-萘胺与Togni's试剂反应,以合成4-三氟甲基取代的1-萘胺。