Isobutylene oxide → 6-Hydroxy-2-{4-[(S)-7-(2-hydroxy-2-methyl-propyl)-2,7-diaza-spiro[4.4]non-2-yl]-phenyl}-3,4-dihydro-2H-isoquinolin-1-one

Participants

Reaction Conditions

Reaction Steps

A mixture of 2-[(S)-4-(2,7-diaza-spiro[4.4]non-2-yl)-phenyl]-6-hydroxy-3,4-dihydro-2H-isoquinolin-1-one (0.50 g), isobutylene oxide (0.10 g), lithium bromide (0.12 g) and NMP (1 mL) was heated at 65° C. for 5 hours. The cooled reaction mixture was distributed between ethyl acetate and water. The organic phase was dried over magnesium sulfate and concentrated. In this way the product was obtained with molecular weight 435.57 (C26H33N3O3); MS (ESI): 436 (M+H+).

Provenance & Evidence