Formaldehyde → HCID 23124995, compound

Participants

Reaction Conditions

Reaction Steps

9.8 ml (0.070 mol) of diisopropylamine are added dropwise at 20° C. to a solution of 24.4 ml (0.065 mol) of n-butyllithium (2.7 M in heptane) in 25 ml of MTBE, and the mixture is stirred at −20° C. for 30 min. Within approx. 10 min, 10 g (0.063 mol) of methyl 2-ethylhexanoate are added dropwise at −20° C., and the mixture is stirred at 20° C. for a further 30 min and subsequently admixed with 5.7 g (0.19 mol) of paraformaldehyde. After 30 min at −20° C., the mixture is stirred at 0° C. for 2 h. After the removal of the solvent at 20° C. and 20 mbar, 20 ml of MTBE and 40 ml of saturated aqueous solution of ammonium chloride are added to the oily residue (approx. 20 g) and the mixture is stirred at RT for 2 h. The organic phase is removed, the aqueous phase is re-extracted 1× with 20 ml of MTBE and the combined organic phases are concentrated on a rotary evaporator. The yield of pure product is 86% (GC).

Provenance & Evidence