Barium Carbonate → HCID 178476214, compound

Participants

Reaction Steps

0.88 g (4.459 millimoles) of anhydrous barium carbonate is stirred in 10 ml of acetic acid at 100° C. until the solid goes completely into solution. The solvent is removed in vacuo. The residue is dissolved in 20 ml of methanol, and the solution is poured into a suspension of 10 g (8.87 millimoles) of primycin sulfate in 600 ml of methanol. The suspension is heated to boiling for 10 minutes under constant stirring. The precipitated barium sulfate is filtered off through a Celite filtration auxiliary agent and the filtrate is evaporated in vacuo. The residue is treated with 50 ml of a 2:1 mixture of acetone and water and filtered. The solid is dried under an infra lamp. Thus 9.4 g of primycin acetate are obtained, yield 91.43%. Mp.: 186°-188° C., /α/D25 =+30°.

Provenance & Evidence