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9,9′-Thiobis-(1,2,3,4,7,8-hexahydro-7-methyl-6H-pyrimido[1,6-a]pyrimidine-6,8-dione)
The 6‐(3‐hydroxypropylamino)‐3‐methylpyrimidine‐2,4‐dione (1) did not afford the expected 6‐(3‐chloro‐propylamino)‐ derivative on reaction with thionyl chloride, but, instead, the pyrimidine rings were joined via a sulfur bridge to give 9,9′‐thiobis(1,2,3,4,7,8‐hexahydro‐7‐melnyl‐6H‐pyrimido[1,6‐a]p...
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Published in: | Journal of heterocyclic chemistry 1999-03, Vol.36 (2), p.453-456 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | The 6‐(3‐hydroxypropylamino)‐3‐methylpyrimidine‐2,4‐dione (1) did not afford the expected 6‐(3‐chloro‐propylamino)‐ derivative on reaction with thionyl chloride, but, instead, the pyrimidine rings were joined via a sulfur bridge to give 9,9′‐thiobis(1,2,3,4,7,8‐hexahydro‐7‐melnyl‐6H‐pyrimido[1,6‐a]pyrirnidine‐6,8‐dione) (3). An identical 9,9′‐thiobis‐ derivative 3 was obtained when reacting thionyl chloride with 1,2,3,4,7,8‐hexahydro‐7‐methyl‐6H‐pyrimido[1,6‐a]pyrimidine‐6,8‐dione (4). We suppose the sulfoxide‐ derivative 2 to be the intermediate of both routes: it underwent reduction to the final sulfide 3 in excess thionyl chloride. |
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ISSN: | 0022-152X 1943-5193 |
DOI: | 10.1002/jhet.5570360219 |