Triethylamine → 1-(2,4-Dichlorophenoxy)methyl-5-chloropyrimidin-2-one

Participants

Reaction Conditions

Reaction Steps

The title compound was prepared in a manner similar to that described in Example 6 by the addition of a solution of 1-chloromethoxy-2,4-dichlorobenzene (see preparation 6) (5 mmol) in dichloromethane (25 ml) to a solution of 5-chloropyrimidin-2-one (5 mmol) and triethylamine (5 mmol) in dichloromethane (75 ml). The mixture was stirred at room temperature for 2 h and at 40° C. for 7 h before being worked up as above; yield 1.30 g (80%), isomer ratio 3:1. The title compound crystallized from DMSO: m.p. 170° C. 1H NMR (TFA): δ 6.10 (CH2), 6.9-7.4 (Ph), 9.0-9.2 (H-4, H-6). IR (KBr): 1680 cm-1 (CO). MS (70 eV, m/z (% rel. int.)) 304 (l,M), 162 (3), 145 (35), 143 (100), 116 (28).

Provenance & Evidence