2,4-Imidazolidinedione, 3-(hydroxymethyl)-1-(2-propynyl)- → [3-propargyl-2,5-dioxo-imidazolidinyl]-methyl (1R,cis)2,2-dimethyl-3-[(Z)3-oxo-3-(2,2,2-trifluoroethoxy)-1-propenyl]-cyclopropane-carboxylate

Participants

Reaction Steps

Using the procedure of Step F of Example 9, the acid of Step D of Example 1 and (3-propargyl-2,5-dioxo-imidazolidinyl)-methanol were reacted to obtain [3-propargyl-2,5-dioxo-imidazolidinyl]-methyl (1R,cis)2,2-dimethyl-3-[(Z)3-oxo-3-(2,2,2-trifluoroethoxy)-1-propenyl]-cyclopropane-carboxylate with a specific rotation of [α]D20 =-4°±1° (c=1% in benzene).

Provenance & Evidence