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A.","year":"1981","journal-title":"Tetrahedron Lett."},{"key":"ref7\/cit7","unstructured":"The price per gram is 10300 yen for IPy2BF4and 2560 yen for I(coll)2PF6; source Aldrich catalogue 2007\u22122008."},{"key":"ref8\/cit8","unstructured":"IPy2BF4can be activated by Lewis acid; see:"},{"key":"ref8\/cit8a","doi-asserted-by":"crossref","first-page":"2234","DOI":"10.1021\/jo00006a050","volume":"56","author":"Barluenga J.","year":"1991","journal-title":"J. Org. Chem."},{"key":"ref8\/cit8b","doi-asserted-by":"crossref","first-page":"2406","DOI":"10.1002\/anie.200351303","volume":"42","author":"Barluenga J.","year":"2003","journal-title":"Angew. Chem., Int. Ed."},{"key":"ref8\/cit8c","doi-asserted-by":"crossref","first-page":"2008","DOI":"10.1039\/B500303B","author":"Barluenga J.","year":"2005","journal-title":"Chem. 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