Facile routes to 1,2,4‐triazolo[3,4‐ b ][1,3,4]thiadiazines and 1,2,4‐triazino[3,4‐ b ][1,3,4]thiadiazine by heteropolyacides | Zendy

Motamedi Radineh | Zendy; Heravi Majid M. | Zendy; Bamoharram Fatemeh F. | Zendy; Haeri Anahita | Zendy

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Facile routes to 1,2,4‐triazolo[3,4‐ b ][1,3,4]thiadiazines and 1,2,4‐triazino[3,4‐ b ][1,3,4]thiadiazine by heteropolyacides

Author(s) -

Motamedi Radineh,

Heravi Majid M.,

Bamoharram Fatemeh F.,

Haeri Anahita

Publication year - 2008

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.5570450445

Subject(s) - chemistry , medicinal chemistry , triazine , propargyl , stereochemistry , organic chemistry , catalysis

Cyclization of 4‐amino‐6‐methyl‐3‐propargylmercapto‐1,2,4‐triazine‐5‐one 3 and 4‐amino‐3‐propargyl mercapto‐1,2,4‐triazole derivatives 6 were afforded 1,2,4‐triazino[3,4‐ b ][1,3,4]thiadiazines 4 and 1,2,4‐triazolo[3,4‐ b ][1,3,4]thiadiazines 7 in presence of heteropolyacids, H 14 [NaP 5 W 29 MoO 110 ] and H 6 P 2 W 18 O 60 in high yields. Among used heteropoly acids, the yields were higher with H 14 ‐P 5 Mo, caused to their high acid strengths.

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