Facile synthesis of 5-bromotropono[c]-fused pyrazoles and isoxazole

Authors

YANG LI
LIANGYU XU
WENTAO GAO

DOI

10.3906/kim-1308-27

Abstract

A facile synthesis of a series of new 5-bromotropono[c]pyrazole derivatives (3 and 10--15) as well as 5-bromotropono[c]isoxazole (17) is described, involving a condensation reaction of 3-acetyl-5-bromotropolone (1) with hydrazine monohydrate (2), arylhydrazine hydrochlorides (4--9), and hydroxylamine hydrochloride (16), respectively. All the synthesized compounds were obtained in good yields of 56%--77% and their structures were characterized by spectral data and HRMS.

Keywords

Tropono[c]pyrazole, tropono[c]isoxazole, condensation reaction, hydrazine monohydrate, arylhydrazine, hydroxylamine

First Page

470

Last Page

476

Recommended Citation

LI, YANG; XU, LIANGYU; and GAO, WENTAO (2014) "Facile synthesis of 5-bromotropono[c]-fused pyrazoles and isoxazole," Turkish Journal of Chemistry: Vol. 38: No. 3, Article 12. https://doi.org/10.3906/kim-1308-27
Available at: https://journals.tubitak.gov.tr/chem/vol38/iss3/12