107046-64-0Relevant academic research and scientific papers
Selective ring N-protection of aminopyrazoles
Seelen, Werner,Sch?fer, Martina,Ernst, Alexander
, p. 4491 - 4493 (2003)
Two simple procedures for the selective protection of the ring N of aminopyrazoles as tert-butoxycarbamate (Boc) in high yields are reported; several other protecting groups (Cbz, Bn, SEM) can be introduced using the one-pot procedure (method B). The N-Boc protected aminopyrazoles are acylated at the exocyclic NH2 group and subsequently deprotected to give the corresponding 3-acylaminopyrazoles in high yields. This procedure is applicable for the rapid parallel synthesis of 3-acylaminopyrazoles.
THE SYNTHESIS OF MANNICH BASES FROM KETONES AND ESTERS VIA ENAMINONES.
Schuda, Francis Paul,Ebner, Cynthia B.,Morgan, Tina M.
, p. 2567 - 2570 (2007/10/02)
The reactions of a series of activated methylene compounds with amide acetals to form high yields of enaminones is described.Further conversion to the Mannich bases via reduction with lithium aluminium hydride is also covered.
