Methylamine → N-methyl-2,3-dihydro-1H-indene-1-carboxamide

Participants

Reaction Steps

A mixture of 150 ml of ethyl acetate and 50 ml of 40% aqueous methylamine (approx. 0.5M) was stirred in an ice bath, while a solution of 11.7 g (65 mmol) of indane-1-carboxylic acid chloride, a compound of Formula 4 prepared, for example, as described in Preparation 4, dissolved 40 ml of ethyl acetate was added over a period of 15 minutes. Stirring was continued at ambient temperature for an additional 4 hours. The organic layer is separated, washed three times with water, once with 10% HCl, and once with saturated sodium bicarbonate. Evaporation of the ethyl acetate yielded 9.0 g of 1-methylaminocarbonyl-indane, an amide of Formula 13; (mp 107°-109° C.; ir 1635 cm-1).

Provenance & Evidence