Synthesis of 5 H ‐benzimidazo[1,2‐ a ][1,3,4]thiadiazolo[2,3‐ d ][1,3,5]triazin‐5‐one and 12 H ‐benzimidazo[1,2‐ a ]pyrimido[6,1 ‐d ][1,3,5]triazin‐12‐one, two new heterocyclic ring systems | Zendy

Bossio Ricardo | Zendy; Marcaccini Stefano | Zendy; Parrini Valerio | Zendy; Pepino Roberto | Zendy

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Synthesis of 5 H ‐benzimidazo[1,2‐ a ][1,3,4]thiadiazolo[2,3‐ d ][1,3,5]triazin‐5‐one and 12 H ‐benzimidazo[1,2‐ a ]pyrimido[6,1 ‐d ][1,3,5]triazin‐12‐one, two new heterocyclic ring systems

Author(s) -

Bossio Ricardo,

Marcaccini Stefano,

Parrini Valerio,

Pepino Roberto

Publication year - 1986

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.5570230345

Subject(s) - chemistry , phosgene , ring (chemistry) , benzimidazole , medicinal chemistry , stereochemistry , closure (psychology) , organic chemistry , market economy , economics

2‐(2,6‐Dimethylpyrimidin‐4‐ylaminobenzimidazole) (VIIa) and 2‐(1,3,4‐thiadiazol‐2‐ylamino)benzimidazole (VIIb) underwent a ring‐closure reaction with phosgene giving 1,3‐dimethyl‐12 H ‐benzirnidazo[1,2‐ a ]pyrirnido[6,1][‐ d ][1,3,5]triazin‐12‐one (IIa) and 5 H ‐benzimidazo[1,2‐ a ][1,3,4]thiadiazolo[2,3‐ d ][1,3,5]triazin‐5‐one (IIb) two hitherto unknown heterocyclic systems. A convenient synthesis of 2,6‐dimethyl‐4‐aminopyrimidine is described.

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