Abstract
The thermolysis of 2-azido-2-tert-butyl-2H-selenochromenes (2a, b), which were easily obtained by the reaction of the corresponding 1-benzoselenopyrylium salts (1) with sodium azide, resulted in a ring expansion to give the novel stable 1,3-benzoselenazepines (5a, b) with denitrogenation in good yields.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Benzazepines / chemical synthesis*
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Benzopyrans / chemical synthesis*
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Indicators and Reagents
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Magnetic Resonance Spectroscopy
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Organoselenium Compounds / chemical synthesis*
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Sodium Azide / chemistry
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Spectrometry, Mass, Electrospray Ionization
Substances
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Benzazepines
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Benzopyrans
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Indicators and Reagents
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Organoselenium Compounds
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Sodium Azide