Reactions of 2-Benzoselenopyrylium Salts with Hydrazine: A New Easy Access to 5H-2,3-Benzodiazepines
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Accession number;05A0008520
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| Title;Reactions of 2-Benzoselenopyrylium Salts with Hydrazine: A New Easy Access to 5H-2,3-Benzodiazepines |
| Author;
SASHIDA H
(Hokuriku Univ., Kanazawa, Jpn)
OHYANAGI K
(Kanazawa Univ., Kanazawa, Jpn)
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Journal Title;Chem Pharm Bull
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Journal Code:G0504A
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ISSN:0009-2363
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VOL.53;NO.1;PAGE.60-63(2005)
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| Figure&Table&Reference;TBL.1, REF.19 |
| Pub. Country;Japan |
| Language;English |
| Abstract;While the solvent-free reactions of the 2-benzoselenopyrylium salts (9) with methyl- or phenylhydrazine afforded the 1-hydrazino-1H-isoselenochromenes (11, 12), the treatment of the salts (9) with anhydrous hydrazine in dry acetonitrile resulted in a ring transformation to give the 5H-2,3-benzodiazepines (13) in one-pot under mild conditions in moderate yields. (author abst.) |
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