6-exo versus 7-endo iodolactonizations of 2-(alkynyl)phenylacetic acids

Tetrahedron Letters

Volumn 50, Issue 13, 2009, Pages 1385-1388

  Ali Badry, Mohamed Gomaa ^a   Kariuki, Benson ^a   Knight, David W ^a   F K , Mohammed ^a  

^a CARDIFF UNIVERSITY   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

ACETONITRILE; ALKYL GROUP; ALKYNE DERIVATIVE; IODINE; PHENYLACETIC ACID DERIVATIVE; POTASSIUM CARBONATE;

ARTICLE; CHEMICAL REACTION; CHEMICAL STRUCTURE; LACTONIZATION;

EID: 59649105424     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2008.12.097     Document Type: Article

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26. 2 = 0.0946 for all data.Data were recorded on a Nonius Kappa CCD diffractometer equipped with an Oxford Cryosystem cryostat. The structure was solved by direct methods with additional light atoms found by Fourier methods using shelx97 (shelx97-Programs for Crystal Structure Analysis (Release 97-2). G.M. Sheldrick, Institüt für Anorganische Chemie der Universität, Tammanstrasse 4, D-3400 Göttingen, Germany, 1998.). Hydrogen atoms were added at calculated positions and refined using a riding model. Anisotropic displacement parameters were used for all non-H atoms; H-atoms were given isotropic displacement parameters equal to 1.2 or 1.5 times the equivalent isotropic displacement parameter of the atom, to which the H-atom is attached. The CIF file has been deposited at the Cambridge Crystallographic Deposit Centre with registry number CCDC 702984.