(2-Ethyl-4,6,7-trimethyl-1-oxo-indan-5-yloxy)-acetic acid 、
溴 在
氢溴酸 (2-Bromo-2-ethyl-4,6,7-trimethyl-1-oxo-indan-5-yloxy)-acetic acid 、
氯丁烷 作用下,
以
溶剂黄146 为溶剂,
以give (1-oxo-2-bromo-2-ethyl-4,6,7-trimethyl-5-indanyloxy)acetic acid as white prisms, m.p. 144°-145° C.的产率得到(2-Bromo-2-ethyl-4,6,7-trimethyl-1-oxo-indan-5-yloxy)-acetic acid