An Improved Synthesis of 1,2,6,7-Tetrahydro-8 H-indeno[5,4- b]furan-8-one
Huang Zhixiong, Wu Chenglong, Shang Zhipei, Deng Yong
Chin. J. Org. Chem. . 2012, (12): 2368 -2372 .  DOI: 10.6023/cjoc201207023