1-Piperidinecarboxaldehyde → HCID 22387817, compound

Participants

Reaction Conditions

Reaction Steps

A solution (1.6 M, 8.3 ml) of n-butyl lithium/hexane was added to a solution of 4-bromo-1-((tert-butyldimethylsilyloxy)methyl)-2-chlorobenzene (4.03 g) in tetrahydrofuran (10 ml) under a nitrogen atmosphere at −60° C. and the mixture was stirred for 45 min. The reaction mixture was once heated to 0° C. and then cooled to −40° C. and 1-formyl piperidine (1.63 g) was dropwise added over 3 min. Then, the reaction mixture was heated to 0° C. over 2 hr. Aqueous ammonium chloride was added to the reaction mixture and the resulting product was extracted twice with hexane. The organic layers were combined, washed successively with diluted hydrochloric acid, a saturated aqueous solution of sodium hydrogencarbonate and saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated and the residue was subjected to silica gel column chromatography (hexane/ethyl acetate=30/1) to give the objective compound (2.49 g) as a colorless oil.

Provenance & Evidence