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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 30, Number 3
BKCSDE 30(3)
March 20, 2009 

A Convenient Synthesis of Polycyclic γ-Lactams via Pauson-Khand Reaction
Seok Won Kang, Yong Hoon Kim, Hea Jeong Kim, Joo Hee Lee, Sung Hoon Kim*
Polycyclic γ-lactams, Pauson-Khand reaction, 5,6,5 Fused ring systems, Co2(CO)8
Pauson-Khand reaction of hydroxyenynes with Co2(CO)8 in the presence of N-methylmorpholine N-oxide or trimethylamine N-oxide as a promoter produced polycyclic γ-lactams as single stereoisomers in moderate to excellent yield. These are the first examples of an intramolecular Pauson-Khand reaction on a hydroxyenyne system tethered to a three- and four-membered ring as new skeletons with 5,6,5 fused ring systems.
691 - 694
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