Efficient routes to alkyl ether linked derivatives of 1,1′-(bi-2-naphthol) bearing 3-N,N-dialkylamide substituents
Abstract
Reaction of (Ra) or (Sa)-2-(N,N-dialkylcarbamoyloxy)-2′-hydroxy-1,1′-binaphthyls (diethyl and diisopropyl derivatives) with α,ω-I(CH2)nI (n = 6, 8) in the presence of K2CO3 leads to the formation 1,n-bis{2′-[2-(N,N-dialkylcarbamoyloxy)-1,1′-binaphthyl]oxy}alkanes. These