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Synthesis of Novel Bibrachial Lariat Ethers (BiBLEs) Containing [1,2,4]Triazolo[3,4-b][1,3,4]Thiadiazines
Abstract
A practical and regioselective method for the synthesis of cis-diastereomers of bibrachial lariat ethers (BiBLEs) bearing ester and amide groups is reported. The novel bibrachial lariat ethers (BiBLEs) 3a–d with neutral side chains were prepared by reaction of the corresponding aza-crown macrocycles 1a–b with ethyl chloroacetate and chloroacetamide.
KEYWORDS macrocycle, bibrachial, lariat ethers, aza-crown, 1,3,4-thiadiazines.
