Cationic Au(I)-catalyzed cycloisomerization of aromatic enynes for the synthesis of substituted naphthalenes

Synlett

Volumn , Issue 3, 2006, Pages 411-414

  Shibata, Takanori ^a   Ueno, Yasunori ^a   Kanda, Kazumasa ^a  

^a WASEDA UNIVERSITY   (Japan)

Author keywords

Catalysis; Cycloisomerization; Enynes; Gold; Indenes; Naphthalenes

Indexed keywords

GOLD; NAPHTHALENE DERIVATIVE;

ARTICLE; CATALYSIS; CHEMICAL REACTION; CHEMICAL STRUCTURE; CYCLIZATION; ISOMERIZATION; SYNTHESIS;

EID: 33344468391     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2006-926261     Document Type: Article

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23. 3.
24. 2.
25. 4. The solvent was removed under reduced pressure and the crude products were purified by thin-layer chromatography.
26. +]: 172.0888; found: 172.0891.
27. The stereochemistry of alkene moiety was determined by NOE observation (Figure 1). (Diagram presented).
28. 3 (5 mol%) as a catalyst, almost no cycloisomerization of 1j proceeded even at 80°C in toluene (see ref. 5).
29. +]: 267.9749; found: 267.9747.
30. During the purification of the products, some vinyl iodide (E)-3m was isomerized to (Z)-3m.