An efficient oxidation of 1,4-dihydropyridines to pyridines using silver carbonate on silica gel and celite

Bulletin of the Korean Chemical Society

Volumn 27, Issue 3, 2006, Pages 355-356

  Momeni, Ahmad Reza ^a   Sameh, Tayebeh ^a   Golmohammadi, Hosein ^a   Naghash, Hamid Javaherian ^a   Aliyan, Hamid ^a   Massah, Ahmad Reza ^a   Solati, Shirin ^a  

^a ISLAMIC AZAD UNIVERSITY   (Iran)

Author keywords

1,4 Dihydropyridines; Celite; Oxidation; Silica gel; Silver carbonate

Indexed keywords

EID: 33645230229     PISSN: 02532964     EISSN: 12295949     Source Type: Journal    
DOI: 10.5012/bkcs.2006.27.3.355     Document Type: Article

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32. 3. Oxidation of 1,4-dihydropyridines with silver carbonate on silica gel: general procedure: A suspension of 1,4-dihydropyridines (0.2 mmol) and silica gel supported silver carbonate (0.72 g) in acetonitrile (10 mL) was stirred at reflux condition for the time indicated in Table 1. The progress of the reaction was monitored by TLC. The mixture was filtered and then washed with acetonitrile. The filtrate was evaporated, the product obtained was recrystalized with ethanol. Products of entry 4 were purified by TLC. Oxidation of 1,4-dihydropyridines with silver carbonate on celite: Same procedure as above method but with 1.44 g celite supported silver carbonate.