Journal
SYNLETT
Volume -, Issue 6, Pages 881-884Publisher
GEORG THIEME VERLAG KG
DOI: 10.1055/s-0029-1219543
Keywords
umpolung; asymmetric catalysis; carbenes; homogeneous catalysis; chiral pool
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- EPFL
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The rapid and modular synthesis of the first bifunctional N-heterocyclic carbenes bearing a (thio)urea moiety as H-bond donor group was reported. Different analogues could be accessed in seven steps from cheap (S)-pyroglutamic acid in good overall yields (14-30%). The synthesized carbenes were active catalysts in the benzoin reaction.
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