Über die Oxydation des O-Methylbulbocapnins mit Jod

✍ Scribed by Max Gerecke; René Borer; Arnold Brossi

• Book ID: 102249584
• Publisher: John Wiley and Sons
• Year: 1975
• Tongue: German
• Weight: 372 KB
• Volume: 58
• Category: Article
• ISSN: 0018-019X
• DOI: 10.1002/hlca.19750580124

✦ Synopsis

Abstract

The oxidation product obtained by treatment of bulbocapnine methyl ether (2a) with iodine in ethanol/water is not the tetradehydroaporphinium salt 4 as assigned by Gadamer & Kuntze, but a dimer of structure 3. Reduction of 3 with zinc in dilute sulfuric acid gives rac‐bulbocapnine methyl ether, whereas reduction with complex hydrides affords the diastereomeric dimers 7a and 7b.