+++Thanks_Ol.Lo_1 article from tet lett

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Synthesis of 2-tetralone derivatives by Bi(OTf)3-catalyzed intramolecular hydroarylation/isomerization of propargyl alcohols
Tetrahedron Letters, Volume 56, Issue 8, 18 February 2015, Pages 1045-1048
Jihee Yun, Jungmin Park, Jaehyun Kim, Kooyeon Lee

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http://www.sciencedirect.com/science/article/pii/S0040403914022187

DOI:

http://dx.doi.org/10.1016/j.tetlet.2014.12.129

[Ol.Lo]