tert-butyl 3-(3-fluoro-4-(pyrrolidin-1-ylmethyl)phenoxy)azetidine-1-carboxylate 、 1-(4-(azetidin-3-yloxy)-2-fluorobenzyl)pyrrolidine 、
四氢吡咯 、
4-hydroxy-2-methoxy-3-methylbenzaldehyde 以afforded 0.25 g (30%) of 52B as an oil的产率得到1-(4-(azetidin-3-yloxy)-2-methoxy-3-methylbenzyl)pyrrolidine