DOI:
10.1055/s-00000083
Synlett
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Typical procedure for deprotection: To a solution of O-protected hydroxamic acid 5i (33 mg, 0.13 mmol) in CH2Cl2 (2.6 mL) and triethylsilane (0.26 mL), was added TFA (0.26 mL) in one portion at r.t. The resulting mixture was stirred at r.t. for 90 min. Solvents were evaporated and the reaction mixture was treated several times with Et2O and evaporated. The residue was dried in vacuo overnight to give hydroxamic acid 6i in quantitative yield as colorless crystals. For characterization of compound 6i, see: Usachova N, Leitis G, Jirgensons A, Kalvins I.
Synth. Commun. 2010;
40: 927
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