92297-66-0Relevant articles and documents
C -Glycosylation of Substituted β-Naphthols with Trichloroacetimidate Glycosyl Donors
Chakraborty, Soumen,Mal, Dipakranjan
, p. 1560 - 1568 (2018/01/17)
Several glycosyl donors have been systematically investigated for C-glycosylation of substituted β-naphthols to delineate the effect of the substituents. Whereas glycosylations of the parent 2-naphthol are smoothly achievable, those of differently substituted 2-naphthols are cumbersome. Efficiency of the glycosylation depends on the nature of both the glycosyl donors and the substituents of the arene ring. Among various glycosyl donors, trichloroacetimidate glycosyl donors are found to be superior for glycosylation with substituted 2-naphthols.
A modification of the asymmetric dihydroxylation approach to the synthesis of (S)-2-arylpropanoic acids
Ishibashi, Hiroyuki,Maeki, Momoe,Yagi, Junko,Ohba, Masashi,Kanai, Tae
, p. 6075 - 6080 (2007/10/03)
Catalytic hydrogenolysis of (S)-2-phenyl-1-2-propanediol (2), prepared by an asymmetric dihydroxylation of α-methylstyrene (1) with AD-mix-α, over Pearlman's catalyst gave (S)-2-phenyl-1-propanol (3). This method was applied to the synthesis of optically active 2-arylpropanoic acid antiinflammatory agents, (S)-ibuprofen (8) and (S)-naproxen (13).
Synthesis of 2,6-Disubstituted Dihydronaphthalenes and Naphthalenes by Electrocyclic Reaction of o-Quinodimethane. A Synthesis of (+/-)-Naproxen
Shishido, Kozo,Yamashita, Akitake,Hiroya, Kou,Fukumoto, Keiichiro
, p. 469 - 475 (2007/10/02)
A survey of the electrocyclic reactions of o-quinodimethanes generated in situ by the thermolysis of dihydrobenzocyclobutenes with a variety of olefinic substituents at C-1 is reported.These reactions provide convenient access to the 2,6-disubstituted dihydronaphthalenes (11) and the naphthalenes (12).Thermolysis of the benzocyclobutenes (10) at 180 deg C in the presence of manganese dioxide affords in good yields the 2,6-di- and 2,3,6-tri-substituted naphthalenes (12) and (16).The naphthalenes (12b,f,h) thus obtained were easily converted into (+/-)-naproxen (5).