反应详情

The compound was prepared from 3-phenoxy-butan-2-one and diethyl oxalate using the methods described in the preceding examples 9 (2,4-dioxo-5-phenoxy-pentanoic acid ethyl ester), 10 (5-phenoxymethyl-2H-pyrazole-3-carboxylic acid ethyl ester), 11 (rac-2-(2-tert-butoxycarbonylamino-propyl)-5-phenoxymethyl-2H-pyrazole-3-carboxylic acid ethyl ester), 12 (rac-6-methyl-2-phenoxymethyl-6,7-dihydro-5H-pyrazolo[1,5-a]pyrazin-4-one), and 13 (rac-6-methyl-2-phenoxymethyl-4,5,6,7-tetrahydro-pyrazolo[1,5-a]pyrazine).