Diisopropylethylamine → HCID 59708480, compound

Participants

Reaction Conditions

Reaction Steps

350 mg 4-chloro-2-[4-(4-chloro-phenyl)-piperazin-1-yl]-6,7-dihydro-thieno[3,2-d]pyrimidine 5-oxide (cf Example 124), 600 mg (R)-1-(tert-butyl-dimethyl-silanyloxymethyl)-2-[4-(tert-butyl-dimethyl-silanyloxy)-phenyl]-ethylamine and 350 μl diisopropylethylamine are placed in 4 ml dioxane, heated to 120° C. in the microwave for 0.2 hours. Then the reaction mixture is evaporated to dryness. The residue is suspended in water/acetonitrile/trifluoroacetic acid and stirred for 3 hours at ambient temperature. The reaction mixture is evaporated to dryness and the diastereomers are separated by preparative HPLC (method D). Analytical HPLC-MS (method E): Diastereomer 1: RT=1.20 min; Diastereomer 2: RT=1.25 min.

Provenance & Evidence