SYNTHESIS AND TAUTOMERISM OF NEW 1-n-ALKYL-5-PYRAZOLONE DERIVATIVES
3-Phenyl-5-pyrazolone (1) is selectively alkylated at position 1 in 40% yield. The alkylated compound (2) is acylated (3) in 60% yield and nitrosated (4) in 80% yield. According to the spectroscopic data a N-H or O-H structure can be proposed for 1 in DMSO. The proton may be at N-2 or on the oxygen...
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| Auteurs principaux: | , , , |
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| Langue: | English |
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Sociedad Chilena de Química
1999
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| Accès en ligne: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16441999000300014 |
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