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Über die Ringtransformation am 5-Acetonyl-2-amino-1,3,4-oxadiazol (1981)

Rabe, Harald ; Westphal, GÜNter

New York, NY : Wiley-Blackwell

Journal für Praktische Chemie/Chemiker-Zeitung 323 (1981), S. 965-971

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ISSN: 0021-8383

Keywords: Chemistry ; Organic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: About Ringtransformation of 5-Acetonyl-2-amino-1,3,4-oxadiazolesTreatment of 1 with hydrazine derivatives gives first of all the 5-acetonyl-2-amino-1,3,4-oxadiazole-hydrazones 2 which can be isolated partially. In the second reaction step ringtransformation to the pyrazoles 3 takes place.Hydroxylamine reacts in the same manner to the 3-methyl-5-semicarbazido-isoxazol 4.The pyrazoles 3b and 3h can be dehydrogenated to the carboamoylazo-pyrazoles 5a and 5b.

Additional Material: 2 Tab.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/prac.19813230615

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