A NEW ROUTE TO ALKYLTROPILIDENES. UNAMBIGUOUS SYNTHESIS OF 3-ALKYL-2,4-DIMETHYLTROPILIDENES
作者:Ken′ichi Takeuchi、Kenji Yasuda、Kunio Okamoto
DOI:10.1246/cl.1976.715
日期:1976.7.5
7-dimethyl-2,6-cycloheptadienone (III) and alkyllithiums, are dehydrated by boric acid to give the corresponding 3-alkyl-2,4-dimethyltropilidenes (II) in good yields. The route provides an unambiguous synthesis of II.
由 2,7-二甲基-2,6-环庚二烯酮 (III) 和烷基锂轻松制备的 1-烷基-2,7-二甲基-2,6-环庚二烯醇 (IV) 用硼酸脱水得到相应的 3-烷基-2,4-二甲基托亚基 (II) 收率良好。该路线提供了 II 的明确合成。