Propargyl alcohol → tert-butyl 2-(4-(hydroxymethyl)-1H-1,2,3-triazol-1-yl)benzylcarbamate

Participants

Reaction Conditions

Reaction Steps

tert-butyl 2-azidobenzylcarbamate, 12, (5.4 g, 21.7 mmol) was dissolved in neat propargyl alcohol (10 mL). The reaction mixture was stirred at 90° C. for 18 h. The reaction mixture was then concentrated in vacuo and the resulting residue dissolved in diethyl ether. Upon standing, triazole 13 crystallized. The crystals were collected by filtration yielding 2.5 g (38%) of 13: 1H NMR (400 MHz, CDCl3) δ 7.82, (s, 1H), 7.64-7.35 (m, 3H), 7.34-7.30 (m, 1H), 5.35, (bs, 1H), 4.87, (s, 2H), 4.15 (s, 2H), 1.42 (s, 9H); ESI+ MS: m/z (rel intensity) 249 (100, M-tBu).

Provenance & Evidence