tert-butyl 2-(2-(1-(3-hydroxyphenyl)-2-oxabicyclo[2.2.2]octan-4-yl)ethoxy)acetate 、
2-溴戊烷 在
2-(2-(1-(3-(pentan-2-yloxy)phenyl)-2-oxabicyclo[2.2.2]octan-4-yl)ethoxy)acetic acid 、
溴甲基环丁烷 、 crude product 作用下,
反应 0.42h,
以Flow rate: 20 mL/min) to give the title compound (11.5 mg, 88% yield; 96% purity by LC/MS) as a light yellow oil的产率得到2-(2-(1-(3-(pentan-2-yloxy)phenyl)-2-oxabicyclo[2.2.2]octan-4-yl)ethoxy)acetic acid