Journal
ORGANIC LETTERS
Volume 14, Issue 12, Pages 3233-3235Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ol301385g
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- National Science Foundation
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A Pd-catalyzed reaction of vinyl iodides and N-tosylhydrazones that assembles eta(3)-allyl ligands through carbene insertion is demonstrated. Intramolecular trapping with nitrogen nucleophiles generates good yields of cinnamyl and pentadienyl amines like those found in alkaloid natural products. Carbenylative amination was the key reaction to complete the synthesis of the alkaloid caulophyllumine B. Migratory insertion was biased to provide allylamines with optical purity up to 64% ee, but in a lower yield.
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