Synthesis of 5,5′-bis-benzofurans and 5-arylbenzofurans
摘要:
A facile synthetic route of the tandem Claisen rearrangement/aerobic Wacker-type oxidative cyclization toward 5,5'-bis-benzofurans 2 and 5-arylbenzofurans 3 starting with bis-allyl aryl ethers 4 or allyl aryl ethers 5 with good yields is described. Skeletons 4 or 5 was prepared from 4,4'-biphenol (1) in moderate total yields via the known protocol. (C) 2013 Elsevier Ltd. All rights reserved.
Synthesis of [3,3′-Di-<i>sec</i>-butyl-4′-(2-dimethylaminoethoxy)biphenyl-4-yl-oxy]acetic Acid
作者:Mengyang Chang、Chiehkai Chan
DOI:10.1002/cjoc.201400032
日期:2014.3
A modified synthetic route of [3,3′‐di‐sec‐butyl‐4′‐(2‐dimethylaminoethoxy)biphenyl‐4‐yloxy]aceticacid (1) with high total yield of 44% from biphenyl‐4,4′‐diol (2) is described.