1-Naphthalenesulfonyl chloride → HCID 178453605, Verbindung

Beteiligte Stoffe

Reaktionsschritte

A solution of trans- (4-aminomethyl-cyclohexylmethyl)-carbamic acid tert-butyl ester (17 g) and ethyldiisopropylamine (14.41 ml) in N,N-dimethylformamide (350 ml) is cooled to 0° C. and treated with a solution of naphthalene-1-sulfonylchloride (15.9 g) in N,N-dimethylformamide (100 ml). The reaction is stirred at ambient temperature for 2 h, concentrated in vacuo. The residue is taken up in dichloromethane, washed with a 0.5 N HCl solution, a saturated aqueous sodium carbonate solution and water, dried and concentrated. Crystallization from hexanes-ethyl acetate gives trans-(4-[ (naphthalene-1-sulfonylamino)-methyl]-cyclohexylmethyl)-carbamic acid tert-butyl ester as a white powder, melting at 199-200° C. Rf(A1) 0.42.

Herkunft & Nachweise