3 years ago
Catalytic and Enantioselective Diels–Alder Reactions of (E)-4-Oxopent-2-enoates
Yuan-He Li, Su-Lei Zhang, Yong Lu, Jia-Hua Chen, Zhen Yang, Kuang-Yu Wang
Novel oxazaborolidines activated by the strong acid triflimide or AlBr3 form cationic chiral catalysts. These are effective catalysts for highly regio- and enantioselective Diels–Alder reactions using substituted (E)-4-oxopent-2-enoates as dienophiles.
Publisher URL: http://dx.doi.org/10.1021/acs.orglett.7b01692
DOI: 10.1021/acs.orglett.7b01692
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