Photolyse von indazolen,benzisoxazolen und anthranilen in saurer Lösung Vorläufige Mitteilung |
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| Authors: | M Georgarakis [] T H Doppler [] M Mrky H-J Hansen H Schmid |
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| Institution: | M. Georgarakis [2],T. H. Doppler [3],M. Märky,H.-J. Hansen,H. Schmid |
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| Abstract: | Indazoles and anthranils on irradiation with a mercury high-pressure lamp in acidic solution (H2SO4/H2O or H2SO4/CH3OH) yield 2-amino-5-hydroxy(or methoxy)-benzaldehydes (acetophenones, respectively) as major products and 2-amino-3-hydroxy (or methoxy)-benzaldehydes (acetophenones, respectively) as minor products. Photolysis of benzisoxazoles in conc. sulfuric acid results in the formation of 2,5-and 2, 3-dihydroxybenzaldehydes (acetophenones, respectively). 5-Methylindazoles form on irradiation in diluted sulfuric acid 2-amino-5-methyl-benzaldehydes. |
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