Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Rui-Jiong Lu"'
Publikováno v:
ARKIVOC, Vol 2010, Iss 9, Pp 229-243 (2010)
Externí odkaz:
https://doaj.org/article/c89f94b1a6f9440199b9371c3910239c
Publikováno v:
Tetrahedron. 68:9397-9404
Organocatalytic asymmetric conjugate addition of tert-butyl nitroacetates to β,γ-unsaturated α-keto esters has been developed. The subsequent in situ hydrolysis–decarboxylation of the adducts provided 5-nitro-2-oxopentanoates. A pyrrolidine-base
Publikováno v:
Tetrahedron. 68:6123-6130
Asymmetric conjugate addition of ethyl 4-chloro-3-oxobutanoate to nitroalkenes and subsequent intramolecular cyclization had been developed. This one-pot reaction provided tetronic acid derivatives in good yields and with excellent enantioselectiviti
Publikováno v:
The Journal of Organic Chemistry. 76:6230-6239
Organocatalytic asymmetric conjugate addition of α-nitroketones to β,γ-unsaturated α-keto esters has been developed. A pyrrolidine-based thiourea-tertiary amine was identified as the best catalyst. The reaction was found to proceed via cascade co
Publikováno v:
ARKIVOC, Vol 2010, Iss 9, Pp 229-243 (2010)
The conjugate addition of cyclic 1,3-dicarbonyl compounds to β,γ-unsaturated α-keto-esters was studied using a series of chiral bifunctional organocatalysts. Takemoto’s catalyst was found to be most efficient for this transformation. Excellent y
Publikováno v:
Arkivoc. 2009:191-199
A series of chiral monosulfonated diamines were prepared and used as the catalysts for asymmetric conjugate addition of bromonitromethane to α,β-unsaturated ketones. The reaction provided nitrocyclopropanes in the presence of appropriate acid and b
Publikováno v:
Synlett. 2010:266-270
Asymmetric conjugate addition of bromonitromethane to α,β-unsaturated ketones was studied using a series of chiral primary amines as the catalysts. The cascade intramolecular cyclopropanation provided nitrocyclopropanes efficiently. Excellent enant
Autor:
Ming Yan, Rui-jiong Lu, Sheng-ping Liu, Junmin Zhang, Li-ting Dong, Quan-sheng Du, Yi-ning Xuan
Publikováno v:
Tetrahedron. 65:4124-4129
Asymmetric conjugate addition of 1-bromonitroalkanes to α,β-unsaturated ketones was studied using chiral primary amines as the catalysts. 9-Amino-9-deoxyepiquinine was found to be highly efficient catalyst for the transformation. 4-Bromo-4-nitroket
Publikováno v:
ChemInform. 44
Pyrrolidine-based thiourea-tertiary amine PTU is used as an efficient organocatalyst for the title reaction.
Publikováno v:
ChemInform. 43
Asymmetric conjugate addition of ethyl 4-chloro-3-oxobutanoate to nitroalkenes and subsequent intramolecular cyclization had been developed. This one-pot reaction provided tetronic acid derivatives in good yields and with excellent enantioselectiviti