Dianion of 1,2-bis(4′,4′-dimethyl-2′-oxazolin-2′-yl)ethane versatile synthetic reagent for annulation
作者:Kyoji Furuta、Nobuo Ikeda、Hisashi Yamamoto
DOI:10.1016/s0040-4039(00)99969-6
日期:1984.1
Treatment of 1,2-bis(4′, 4′-dimethyl-2′-oxazolin-2′-yl)ethane with butyllithium produced the corresponding dianion, which on exposure with 1, ω -dihalides gives cyclic derivatives. The same dianion reacts with the β-bromoesters to yield substituted cyclopentanones.