碘甲烷 、 methoxy-methyl-oxo-sulfanylidene-$l^{6}-sulfane 、
3-bromo-7-(2-chloro-4,6-dimethylphenyl)-2-methyl-4,5,6,7-tetrahydro-2H-pyrazolo[3,4-b]pyridine 、 在
2-Methyl-3-methylsulfanyl-7-(2,4,6-trimethyl-phenyl)-4,5,6,7-tetrahydro-2H-pyrazolo[3,4-b]pyridine 作用下,
以to afford 2-20 as a white solid (48% theory; mp=90.3-91.7° C.)的产率得到2-Methyl-3-methylsulfanyl-7-(2,4,6-trimethyl-phenyl)-4,5,6,7-tetrahydro-2H-pyrazolo[3,4-b]pyridine