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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 25, 1995 - Issue 3
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Original Articles

Regioselective O-Demethylation of Aporphines with Methanesulfonic Acid / Methionine: An Efficient One-Pot Transformation of Thebaine to (R)(-)-2-Methoxyapomorphine

S. Berényi Department of Organic Chemistry, Lajos Kossuth University, P.O. Box 20, Debrecen, H-4010, Hungary
,
C. Csutorás Department of Organic Chemistry, Lajos Kossuth University, P.O. Box 20, Debrecen, H-4010, Hungary
,
S. Gyulai Department of Organic Chemistry, Lajos Kossuth University, P.O. Box 20, Debrecen, H-4010, Hungary
&
S. Makleit Department of Organic Chemistry, Lajos Kossuth University, P.O. Box 20, Debrecen, H-4010, Hungary
Pages 283-288 | Received 03 Jun 1994, Published online: 23 Sep 2006
 
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Abstract

2-Methoxyapomorphine (4) was obtained by the rearrangement of thebaine (1) with methanesulfonic acid in the presence of methionine, a reagent system suitable for the regioselective O-demethylation of aporphine derivatives.

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