Preparation of 2‐(1<i>H</i>‐pyrazol‐5‐yl)benzenesulfonamides from polylithiated C(α),N‐carbo‐<i>tert</i>‐butoxyhydrazones and methyl 2‐(aminosulfonyl)benzoate
作者:John D. Knight、Jordan B. Brown、Jason S. Overby、Charles F. Beam、N. Dwight Camper
DOI:10.1002/jhet.5570450122
日期:2008.1
Select C(α), N-carbo-tert-butoxyhydrazones were dilithiated with excess lithium diisopropylamide followed by condensation with methyl 2-(aminosulfonyl)benzoate, acid cyclization, hydrolysis, and decarboxylation to afford new 2-(1H-pyrazol-5-yl)benzenesulfonamides, [NH-pyrazolyl-ortho-benzene-sulfonamides].
将选择的C(α),N-碳-叔丁氧基hydr与过量的二异丙基氨基锂二锂化,然后与2-(氨基磺酰基)苯甲酸甲酯缩合,进行酸环化,水解和脱羧,得到新的2-(1 H-吡唑-5) -(基)苯磺酰胺,[ NH-吡唑基-邻-苯磺酰胺]。