Ring closure reactions of cyclic 2‐arylaminomethylene‐1,3‐diones | Zendy

Van Tinh Dang | Zendy; Fischer Michaela | Zendy; Stadlbauer Wolfgang | Zendy

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Ring closure reactions of cyclic 2‐arylaminomethylene‐1,3‐diones

Author(s) -

Van Tinh Dang,

Fischer Michaela,

Stadlbauer Wolfgang

Publication year - 1996

Publication title -

journal of heterocyclic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.321

H-Index - 59

eISSN - 1943-5193

pISSN - 0022-152X

DOI - 10.1002/jhet.5570330358

Subject(s) - chemistry , acridine , quinoline , ring (chemistry) , closure (psychology) , thermal decomposition , medicinal chemistry , bicyclic molecule , stereochemistry , organic chemistry , economics , market economy

5‐Arylaminomethylene compounds such as 5‐arylaminomethylenepyrimidine‐2,4,6‐triones 2 or 2‐phenylaminomethylenephenalene‐1,3‐dione 13 cyclize by thermolysis via migration of the arylamino group to pyrimido[4,5‐ b ]quinoline‐2,4‐diones 6 or 7‐oxo‐7 H ‐naphtho[1,8‐ bc ]acridine 15 , respectively. 2‐Phenylaminomethylenecyclohexane‐1,3‐dione 8 cyclizes to 9,9‐dimethyl‐9,10‐dihydrophenanthridin‐7(8 H )‐one 11 without rearrangement.

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