Insertion and fragmentation of 2??ferrocenylmethylidene??1, 3??diketones upon their reactions with N??methylhydrazine

…, JM Martinez Mendoza, LR Ramírez…

Index: Klimova, Elena I.; Vazquez Lopez, Eduardo A.; Martinez Mendoza, Juan M.; Ramirez, Lena Ruiz; Alamo, Marcos Flores; Backinowsky, Leon V. Journal of Heterocyclic Chemistry, 2009 , vol. 46, # 3 p. 484 - 491

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Citation Number: 2

Abstract

Syntheses of pyrazoles are mainly based on reactions of 1, 3-diketones or 2, 3-ynones with hydrazines or on the oxidation of 2-pyrazolines [1–3]. Both these methods are virtually inapplicable as approaches to ferrocenylpyrazoles, because 1, 3-diketones with ferrocenyl substituents are usually accessible with difficulty, while oxidative methods may result in destruction of the metallocene substituent. Earlier [4, 5], we have proposed a method for ...