cyclooctane-1,5-dione

Conditions: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 1,3-Dipropyl-7-pyrrolidin-1-ylmethyl-3,7-dihydro-purine-2,6-dione (638 mg) was taken in dry THF (10 ml) at −78° C. nBuLi (0.88 ml, 2.5M in hexane) was added slowly. The reaction mixture turned orange and stirred for 30 min at −78° C. Cyclooctane-1,5-dione (280 mg,) was dissolved in 3 ml of dry THF, added to the reaction mixture. Stirred at −78° C. for 30 min, slowly warmed to rt and stirred overnight. The reaction mixture was quenched with sat NH4Cl and extracted with ethyl acetate (3×50 ml). Combined organic layer was washed with 1N HCl, water, and brine. Dried over anhydrous Na2SO4 and concentrated. The crude product was purified on silica column, eluted with ethyl acetate:hexane (1:1). Mass (ES+ 377) was added slowly added to the reaction mixture Stirred at −78° C. for 30 min slowly warmed to rt stirred overnight The reaction mixture was quenched with sat NH4Cl extracted with ethyl acetate (3×50 ml) Combined organic layer was washed with 1N HCl, water, and brine Dried over anhydrous Na2SO4 concentrated The crude product was purified on silica column eluted with ethyl acetate:hexane (1:1)

Conditions: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 1,3-Dipropyl-7-pyrrolidin-1-ylmethyl-3,7-dihydro-purine-2,6-dione (638 mg) was taken in dry THF (10 ml) at −78° C. nBuLi (0.88 ml, 2.5M in hexane) was added slowly. The reaction mixture turned orange and stirred for 30 min at −78° C. Cyclooctane-1,5-dione (280 mg,) was dissolved in 3 ml of dry THF, added to the reaction mixture. Stirred at −78° C. for 30 min, slowly warmed to rt and stirred overnight. The reaction mixture was quenched with sat NH4Cl and extracted with ethyl acetate (3×50 ml). Combined organic layer was washed with 1N HCl, water, and brine. Dried over anhydrous Na2SO4 and concentrated. The crude product was purified on silica column, eluted with ethyl acetate:hexane (1:1). Mass (ES+ 377) was added slowly added to the reaction mixture Stirred at −78° C. for 30 min slowly warmed to rt stirred overnight The reaction mixture was quenched with sat NH4Cl extracted with ethyl acetate (3×50 ml) Combined organic layer was washed with 1N HCl, water, and brine Dried over anhydrous Na2SO4 concentrated The crude product was purified on silica column eluted with ethyl acetate:hexane (1:1)

Conditions: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 1,3-Dipropyl-7-pyrrolidin-1-ylmethyl-3,7-dihydro-purine-2,6-dione (638 mg) was taken in dry THF (10 ml) at −78° C. nBuLi (0.88 ml, 2.5M in hexane) was added slowly. The reaction mixture turned orange and stirred for 30 min at −78° C. Cyclooctane-1,5-dione (280 mg) was dissolved in 3 ml of dry THF, added to the reaction mixture. Stirred at −78° C. for 30 min, slowly warmed to rt and stirred overnight. The reaction mixture was quenched with sat NH4Cl and extracted with ethyl acetate (3×50 ml). Combined organic layer was washed with 1N HCl, water, and brine. Dried over anhydrous Na2SO4 and concentrated. The crude product was purified on silica column, eluted with ethyl acetate:hexane (1:1). Mass (ES+ 377) was added slowly added to the reaction mixture Stirred at −78° C. for 30 min slowly warmed to rt stirred overnight The reaction mixture was quenched with sat NH4Cl extracted with ethyl acetate (3×50 ml) Combined organic layer was washed with 1N HCl, water, and brine Dried over anhydrous Na2SO4 concentrated The crude product was purified on silica column eluted with ethyl acetate:hexane (1:1)

Conditions: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 1,3-Dipropyl-7-pyrrolidin-1-ylmethyl-3,7-dihydro-purine-2,6-dione (638 mg) was taken in dry THF (10 ml) at −78° C. nBuLi (0.88 ml, 2.5M in hexane) was added slowly. The reaction mixture turned orange and stirred for 30 min at −78° C. Cyclooctane-1,5-dione (280 mg,) was dissolved in 3 ml of dry THF, added to the reaction mixture. Stirred at −78° C. for 30 min, slowly warmed to rt and stirred overnight. The reaction mixture was quenched with sat NH4Cl and extracted with ethyl acetate (3×50 ml). Combined organic layer was washed with 1N HCl, water, and brine. Dried over anhydrous Na2SO4 and concentrated. The crude product was purified on silica column, eluted with ethyl acetate:hexane (1:1). Mass (ES+ 377) was added slowly added to the reaction mixture Stirred at −78° C. for 30 min slowly warmed to rt stirred overnight The reaction mixture was quenched with sat NH4Cl extracted with ethyl acetate (3×50 ml) Combined organic layer was washed with 1N HCl, water, and brine Dried over anhydrous Na2SO4 concentrated The crude product was purified on silica column eluted with ethyl acetate:hexane (1:1)