339316-38-0Relevant academic research and scientific papers
DABCO-promoted synthesis of pyrazoles from tosylhydrazones and nitroalkenes
Tang, Meng,Zhang, Wen,Kong, Yuanfang
supporting information, p. 6250 - 6254 (2013/09/23)
An efficient synthesis of pyrazoles from tosylhydrazones and nitroalkenes was developed. In comparison with the previously reported 1,3-dipolar cycloaddition reaction of diazo compounds with electron-deficient alkenes or alkynes, this methodology proceeded with a sequential Baylis-Hillman/ intramolecular cyclization mechanism and a variety of reversed regioselectivity products were prepared in good yields.
