Direct Observation of a Cationic Gold(I)–Bicyclo[3.2.0]hept‐1(7)‐ene Complex Generated in the Cycloisomerization of a 7‐Phenyl‐1, 6‐enyne1. Issue 24 (25th April 2013)

• Record Type: Journal Article
• Authors: Brooner, Rachel E. M.; Brown, Timothy J.; Widenhoefer, Ross A.
• Is Part Of: Angewandte Chemie international edition. Volume 52:Issue 24(2013)
• Page Start: 6259
• Page End: 6261
• Publication Date: 2013-04-25
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201301640
• Languages: English
• ISSNs: 1433-7851

Abstract

<abstract abstract-type="graphical" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p> <bold>The reaction of enyne 1</bold> with a 1:1 mixture of [LAuCl] and AgSbF₆ in CD₂Cl₂ at −20 °C gave the gold complex <bold>2</bold> in 97 % yield (NMR spectroscopy). Warming a solution of <bold>2</bold> at 25 °C led to 1, 3‐H migration (<italic>t</italic>_1/2≈16 min) to form the gold complex <bold>3</bold> with 96 % selectivity. ¹³C NMR analysis of <bold>2</bold> and <bold>3</bold> showed predominant metallacyclopropane character of the goldbicyclo[3.2.0]heptene bond.<boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgg21fg6fx7" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>