Pyridine → Chloromethyl 4-acryloyloxybutyl carbonate

Pyridine (0.89 ml, 11.00 mmol) is added dropwise to a solution of chloromethyl chloroformate (0.98 ml, 11.00 mmol) and 4-hydroxybutyl acrylate (1.38 ml, 10.00 mmol) in dichloromethane (12 ml) at 3° C. under a dry N2 atmosphere. After 15 min. at 3° C. and 17 hours at 20° C. the reaction mixture is transferred to a separating funnel with the aid of dichloromethane (10 ml). The reaction mixture is washed with hydrochloric acid (1.00 M, 10 ml), saturated aqueous sodium hydrogen carbonate (10 ml) and water (2×10 ml). The organic phase is dried (MgSO4) and the solvent evaporated under reduced pressure to give 1.76 g (74%) of the title product. 1H NMR (60 MHz, CDCl3): δ 1.82 (4 H, m, CH2 --CH2), 4.27 (4 H, m, 2×CH2 --O), 5.77 (2 H, s, Cl--CH2 --O), 5.8-6.7 (3 H, m, CH=CH2).

1. washThe reaction mixture is washed with hydrochloric acid (1.00 M, 10 ml), saturated aqueous sodium hydrogen carbonate (10 ml) and water (2×10 ml)
2. dry with materialThe organic phase is dried (MgSO4)
3. customthe solvent evaporated under reduced pressure

ORD-Eintrag

ord-67a0952df54046a3b95ef10ea3b9243a

Quelldatensatz

uspto-grants-1996_06

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US05529766