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Synlett 1993; 1993(1): 68-70
DOI: 10.1055/s-1993-22352
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An Efficient Synthesis of (±)-Isohinokinin from the Acyclic Ester Precursor

Xiyan Lu* , Guoxin Zhu
  • *Shanghai Institute of Organic Chemistry, Academia Sinica, 345 Lingling Lu, Shanghai 200032, People's Republic of China
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Publication Date:
19 March 2002 (online)

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A stereoselective approach to the synthesis of (±) Isohinokinin has been developed in which the key step is the construction of the γ-butyrolactone by PdCl2(PhCN)2 catalyzed cyclization of the easily available acyclic 2-alkenyl 2-alkynoate in the presence of CuCl2.