The Synthesis of Analogs of the Hallucinogen 1-(2,5-Dimethoxy-4-methylphenyl)-2-aminopropane (DOM). II. Some Ring-methoxylated 1-Amino-and 2-Aminoindanes

Abstract

The synthesis of 2-amino-4,7-dimethoxy-5-methylindane (12a), the cyclic analog of the known hallucinogen 1-(2,5-dimethoxy-4-methylphenyl)-2-aminopropane (DOM), is described. The key intermediate was trans-2-amino-4,7-dimethoxy-6-methyl-1-indanol (trans-10a) which was converted to 12a in two ways. The prolonged action of hydrochloric acid on trans-10a gave 4,7-dimethoxy-5-methyl-2-indanone (11d), the oxime of which, on catalytic reduction, was converted to 12a in low yield. A direct catalytic reduction of trans-10a in the presence of hydrochloric acid also gave 12a, together with cis-2-amino-4,7-dimethoxy-6-methyl-l-indanol (cis-10a).The synthesis and properties of other derivatives of 2-aminoindane, and some derivatives of 1-amino-indane are also described.