2-[2,4-dichloro-5-(2-propynyloxy)phenyl]-2.4-dihydro-5-(3.4epoxybutyl)-3H-1,2,4-triazol-3-one 、
potassium carbonate 在
crude product 、 silica gel 、
二氯甲烷 、
甲醇 作用下,
以
乙腈 为溶剂,
反应 2.0h,
以to give 184 mg of the title product of Step 4 as a pale yellow foam, 1H NMR (CDCl3, 400 MHz) δ 7.5 (s,1H), 7.15 (s,1H), 4.8 (s,2H), 4.45 (broad t,1H), 3.8 (m,2H), 3.0 (m,1H), 2.8 (m,1H), 2.6 (s,1H), 2.2 (s,1H), 2.15 (m,1H), 1.95 (m,1H)的产率得到5,6,7,8-tetrahydro-2-[2,4-dichloro-5-(2-propynyloxy)phenyl]-6-hydroxy-1,2,4-triazolo[4,3-a]pyridin-3(2H)-one