Ruthenium-catalyzed coupling of α-carbonyl phosphoniums with sulfoxonium ylidesviaC-H activation/Wittig reaction sequences
A Ru(ii)-catalyzed coupling of various α-carbonyl phosphoniums with sulfoxonium ylides has been realized for the facile synthesis of 1-naphthols in good to excellent yields. This oxidant-free transformation proceeds through Ru-catalyzed C-H activation of phosphoniums, Ru-carbene insertion, and intramolecular Wittig reaction processes.
Cu(II)-Catalyzed 6π-Photocyclization of Non-6πSubstrates
This research successfully achieved a Cu(II)-catalyzed 6π-photocyclization of non-6πsubstrates. The photoenolization converts ortho-alkylphenyl alkynl ketones into a triene-type intermediate which undergoes the subsequent 6π-photocyclization to give napht
Zhang, Yanbin,Jin, Ruiwen,Kang, Wenjie,Guo, Hao
supporting information
p. 5502 - 5505
(2020/07/08)
Chemo- and Regioselective Catalyst-Controlled Carbocyclization of Alkynyl Ketones: Rapid Synthesis of 1-Indanones and 1-Naphthols
A catalyst-controlled intramolecular carbocyclization of 2-alkynyl aryl ketones is presented. Under rhodium(III) catalysis, 1-indanones are formed through 5-exo-dig carbocyclizations with exclusive chemo-, regio- and stereoselectivity. When catalyzed by copper(I), 1-naphthols are obtained through 6-endo-dig carbocyclizations with exclusive chemo- and regioselectivity.
Song, Liangliang,Tian, Guilong,Van der Eycken, Erik V.
supporting information
p. 7645 - 7648
(2019/05/21)
Concise synthesis of 1-naphthols under mild conditions through a copper-catalyzed arylation of methyl ketones
A concise synthesis of 1-naphthols via cyclization of o-iodoacetophenones and methyl ketones has been realized under very mild conditions. The cyclization process is initiated by a rare coppercatalyzed arylation of simple methyl ketones with ortho-iodoacetophenones.
Tandem carbon-carbon bond insertion and intramolecular aldol reaction of benzyne with aroylacetones: Novel formation of 4,4′-disubstituted 1,1′-binaphthols
An efficient route to 4-aryl-2-naphthols from arynes and aroylacetones was developed by carbon-carbon bond insertion followed by an intramolecular aldol reaction and dehydration. Benzyne derived from 2-(trimethylsilyl)phenyl triflate reacted with benzoyla