Preparation of cyclopentanone hydrazone
Cyclopentanone hydrazone is prepared from 50 g. of 85% hydrazine hydrate in 100 ml of 95% ethanol, to which 30 g. of cyclopentanone was added with shaking. The mixture was refluxed for 30 min. and, after standing at 4°C overnight, was concentrated on the steam-bath and distilled at 2 mm. yielding 9 g. of cyclopentanone hydrazone; b.p. 45-45.5°C at 1 mm., n25.5/D=1.5083.
W. von E. Doering and C. H. DePuy, J. Am. Chem. Soc., 75, 5955 (1953).
cyclopentylidenehydrazine, 10080-41-8, Cyclopentanone, one, NSC75983, AC1L5NSI, AC1Q4SUD, Cyclopentylidene-hydrazine, CTK3J9266, HUFXTMLATKDGEI-UHFFFAOYSA-N, AR-1I3311, NSC-75983, OR192966