Ring Closure of 4‐Azido‐3‐formyl‐(or Acetyl‐)2‐pyridones to Isoxazolo[4,3‐ c ]pyridones | Zendy

Khattab Ahmed F. | Zendy

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Ring Closure of 4‐Azido‐3‐formyl‐(or Acetyl‐)2‐pyridones to Isoxazolo[4,3‐ c ]pyridones

Author(s) -

Khattab Ahmed F.

Publication year - 1996

Publication title -

liebigs annalen

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.825

H-Index - 155

eISSN - 1099-0690

pISSN - 0947-3440

DOI - 10.1002/jlac.199619960314

Subject(s) - chemistry , aldehyde , quinoline , ring (chemistry) , amination , derivative (finance) , closure (psychology) , medicinal chemistry , reductive amination , thermal decomposition , stereochemistry , organic chemistry , catalysis , market economy , financial economics , economics

Azidation of the chlor aldehyde 2 , which was obtained from the 4‐hydroxy‐2‐pyridone 1 , afforded the ring‐closed isoxazolopyridone 3 . Thermolysis of the 3‐acetyl‐4‐azido‐2‐pyridone 8 , which was obtained from the corresponding 4‐tosyloxy derivative 7 , afforded isoxazolopyridine 9 . Amination of the chloro aldehyde 2 yielded the pyrido[4,3‐ b ]quinoline 11 instead of the 4‐chloroazomethine 10 .

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