Highly Effective Synthetic Methods for Substituted 2-Arylbenzofurans Using [3,3]-Sigmatropic Rearrangement:  Short Syntheses of Stemofuran A and Eupomatenoid 6 Okiko Miyata Norihiko Takeda Takeaki Naito 10.1021/ol049564o.s001 https://acs.figshare.com/articles/journal_contribution/Highly_Effective_Synthetic_Methods_for_Substituted_2_Arylbenzofurans_Using_3_3_Sigmatropic_Rearrangement_Short_Syntheses_of_Stemofuran_A_and_Eupomatenoid_6/3338176 A new and efficient synthesis of 2-arylbenzofurans has been achieved via a route involving acylation and subsequent [3,3]-sigmatropic rearrangement of oxime ethers. Its synthetic utility is demonstrated by a short synthesis of stemofuran A and eupomatenoid 6 in which no procedure for protection of the phenolic hydroxyl groups is needed. 2004-05-27 00:00:00 eupomatenoid 6 Sigmatropic Synthese oxime ethers Method utility Stemofuran sigmatropic acylation synthesis stemofuran Substituted Effective Arylbenzofuran protection Rearrangement Eupomatenoid 6 arylbenzofuran rearrangement procedure phenolic hydroxyl groups