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• W2022063265 startingPage "7212" @default.
• W2022063265 abstract "We report that chiral bicyclic guanidine 1 is found to catalyze the isomerization of alkynes to chiral allenes with high enantioselectivities. This Brønsted base catalyzed 1,3-proton shift reaction, an efficient and atom economical reaction, proceeds through deprotonation and protonation sequences. The axial chirality of the allenes is efficiently transferred to functionalized butenolides and cycloaddition products. We also successfully demonstrate the stereospecific synthesis of butenolide through allenoate cyclization with a catalytic cationic Au(I) complex." @default.
• W2022063265 created "2016-06-24" @default.
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• W2022063265 date "2009-05-07" @default.
• W2022063265 modified "2023-09-30" @default.
• W2022063265 title "Enantioselective Synthesis of Chiral Allenoates by Guanidine-Catalyzed Isomerization of 3-Alkynoates" @default.
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• W2022063265 doi "https://doi.org/10.1021/ja901528b" @default.
• W2022063265 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/19422238" @default.
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