p-Toluenesulfonic acid → HCID 53734620, compound

Participants

Reaction Steps

248 g of 1,1-dimethyl-tetralin-4-carboxylic acid in 1.740 liters of absolute alcohol are held at reflux temperature for 6 hours with 24.8 g of paratoluenesulphonic acid in a 3-liter flask provided with a thermometer, stirrer and reflux condenser. The excess alcohol is then distilled off under a slight vacuum and the residue is poured into ice/water. The mixture is extracted with ether, washed neutral, dried, filtered, evaporated and distilled, there being thus obtained 177 g of 1,1-dimethyl-tetralin-4-carboxylic acid ethyl ester of boiling point 74° C./0.03 mmHg; nD20 =1.5153; yield 63%. Odour: faint, jasmone-like.

Provenance & Evidence