Carbon Dioxide → N-((S)-6-formyl-1,2,3,4-tetrahydronaphthalen-2-yl)-4-[(S)-1-(tetrahydrofuran-2-yl)methoxy]benzamide

Participants

Reaction Steps

A mixture of N-((S)-6-bromo-1,2,3,4-tetrahydronaphthalen-2-yl)-4-[(S)-1-(tetrahydrofuran-2-yl)methoxy]benzamide (10.0 g) and THF (130 ml) was cooled to −78° C. (dry ice bath) and a solution of methyl lithium (18.9 ml; 1.6 M in diethyl ether) was added dropwise. One minute after the addition had ended, a solution of butyllithium (13.9 ml; 2.5 M in toluene) was added dropwise. One minute after the addition had ended, DMF (5.1 g) was added, and, after a further 30 seconds, acetic acid (4.5 ml). After warming to room temperature, the reaction mixture was diluted with water and extracted with ethyl acetate. The organic phases were dried over magnesium sulfate and concentrated. The product was thus obtained with the molecular weight of 379.46 (C23H25NO4); MS (ESI): 380 (M+H+). In an analogous manner, N-((R)-6-formyl-1,2,3,4-tetrahydronaphthalen-2-yl)-4-[(S)-1-(tetrahydrofuran-2-yl)methoxy]benzamide was prepared from N-((R)-6-bromo-1,2,3,4-tetrahydronaphthalen-2-yl)-4-[(S)-1-(tetrahydrofuran-2-yl)methoxy]benzamide.

Provenance & Evidence