【摘 要】
：
The reaction of hydrazine hydrate with a new α,γ-diketone ester 3, derived from the reaction of 2,6-dimethyl-3,5-diacetyl-pyridine 2 with diethyl oxalate in t
【机 构】
：
Department of Chemistry,Instrumental Analysis and Research Center,School of Materials Science and En
论文部分内容阅读
The reaction of hydrazine hydrate with a new α,γ-diketone ester 3, derived from the reaction of 2,6-dimethyl-3,5-diacetyl-pyridine 2 with diethyl oxalate in the presence of sodium ethoxide, afforded the pyrazole derivative 4. Treatment of 4 with 2-chlorobenzoyl chloride gave diethyl 2,6-dimethyl-3,5-diyl-(1-2(chlorobenzoyl)-1H-pyrazole-3-diethyl-carboxylate) pyridine 5. Fine crystal of 5 suitable for XRD analysis was obtained form recrystalization in ethyl acetate. The crystal belongs to the triclinic system, space group P, with a = 1.0342(11), b = 1.2211(12), c = 1.5013(15) nm, α = 82.5190(10), β = 85.7960(10), γ = 85.3150(10)°, V = 1.8697(3) nm3, Dc = 1.173 g/cm3, μ = 0.219 mm-1, F(000) = 684, Z = 2, the final R = 0.0720 and wR = 0.2211.
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