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Macroheterocycles. 32. Homolytic dehydrodimerization of crown ethers

โœ Scribed by N. G. Luk'yanenko; A. V. Lobach; M. N. Parfenova; L. N. Lyamtseva; O. S. Timofeev; A. I. Gren'

Book ID
112329060
Publisher
Springer US
Year
1987
Tongue
English
Weight
338 KB
Volume
23
Category
Article
ISSN
0009-3122

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The synthesis of some novel benzo-crown ethers by =-amidomethylation is described. ~-Amidomethylation at carbon (the Chernyak-Einhorn reaction) has been the subject of numerous articles and reviews [2, 3], but there have been no reports of the use of benzocrown ethers in such reactions, and only a

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extract was dried over CaCI 2 and evaporated in vacuo. The residue was purified by column chromatography [silica gel, benzene--ethyl acetate (5:1)] and recrystallized from benzene--heptane to give 1.98 g (48%) of III.