Utilization of DmbNHNH2 in the synthesis of amino-substituted 4-((3,5-diamino-1H-pyrazol-4-yl)diazenyl)phenols

@inproceedings{Schtznerov2012UtilizationOD,
  title={Utilization of DmbNHNH2 in the synthesis of amino-substituted 4-((3,5-diamino-1H-pyrazol-4-yl)diazenyl)phenols},
  author={Eva Sch{\"u}tznerov{\'a} and Igor Popa and Vladim{\'i}r Kry{\vs}tof and Hiroyuki Koshino and Zdeněk Tr{\'a}vn{\'i}{\vc}ek and Pavel Hradil and Petr Cankař},
  year={2012}
}
Abstract (2,4-Dimethoxybenzyl)hydrazine (DmbNHNH 2 ) was utilized in the synthesis of Dmb-protected 4-((3,5-diamino-1 H -pyrazol-4-yl)diazenyl)phenols. This unambiguous protection of the pyrazole endocyclic nitrogen atom enabled the preparation of amino-substituted 4-((3,5-diamino-1 H -pyrazol-4yl)diazenyl)phenols that were inaccessible through direct substitution. The Boc group could be selectively cleaved in the presence of the Dmb group. 

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