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Abstract This work reports a facile method to prepare dually responsive poly(propylene sulphide)-b-poly(N-isopropylacrylamide-co-N,N-dimethylacrylamide) (PPS-P(NIPAm-co-DMAA)) block copolymers which… (More)
The first enantioselective formal [3 + 2] cycloaddition of α-unsubstituted isocyanoacetates with protecting-group-free methyleneindolinones was developed. A variety of optically enriched… (More)
An enantioselective [3 + 2] cycloaddition of heteroatom-substituted alkenes with α-substituted isocyanoacetates has been developed. The resulting cycloadducts could be further transformed to access a… (More)
Optically active highly functionalized 3,4-dihydropyridin-2-ones were synthesized by N-heterocyclic carbene-catalyzed [4+2] enantioselective cycloaddition of ketenes and 1-azadienes.
N-heterocyclic carbenes (NHCs) were demonstrated to be efficient catalysts for the Staudinger reaction of ketenes with N-tosyl, N-benzyloxycarbonyl, or N-tert-butoxycarbonyl imines. Chiral NHC 8b,… (More)
A method for intramolecular sp2 C-H oxidative arylation of unactivated cyclic olefins has been developed to access spiro-dihydroquinoline and octahydrophenanthrene derivatives in a straightforward… (More)