Synthesis of 5-amino-4,5-dihydropyrazolo [3,4-d] pyrimidin-4-ones and related isomeric systems
作者:A. Maqestiau、J.-J. Vanden Eynde
DOI:10.1016/s0040-4020(01)83460-8
日期:1987.1
Treatment of ethyl (heteroalkylidene)aminopyrazole-4-carboxylates with hydrazine hydrate generally provides a ready synthetic route to 5-amino-4, 5-dihydropyrazolo [3,4-d] pyrimidin-4-ones, although ethyl 5-[(dimethylamino) alkylidene]aminopyrazole-4-carboxylates are unreactive.
MAQUESTIAU, A.;VANDEN, EYNDE J. -J., TETRAHEDRON, 43,(1987) N 18, 4185-4193
作者:MAQUESTIAU, A.、VANDEN, EYNDE J. -J.
DOI:——
日期:——
MAQUESTIAU, A.;VANDEN, EYNDE J. -J., TETRAHEDRON, 43,(1987) N 18, 4195-4202
作者:MAQUESTIAU, A.、VANDEN, EYNDE J. -J.
DOI:——
日期:——
US7629294B2
申请人:——
公开号:US7629294B2
公开(公告)日:2009-12-08
Pyrazolopyrimidines
申请人:Gebauer Olaf
公开号:US20050187224A1
公开(公告)日:2005-08-25
The invention relates to prazolopyrimidines of the formula
in which R
1
, R
2
, R
3
, R
4
, R
5
, and X are as defined in the disclosure, to a process for preparing these compounds, and to their use for controlling unwanted microorganisms.