Abstract
Tetra‐aza macrocycles with 28‐ to 44‐membered rings can be readily synthesized by reaction of dibromide and ditosyldiamide without use of a high dilution method. The reaction proceeded very smoothly with a 10 mM concentration in DMF, and gave the macrocycles in excellent yields (60–80%). Favorable effects of cesium ion on the cyclization have been observed.
Original language | English |
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Pages (from-to) | 1463-1465 |
Number of pages | 3 |
Journal | Journal of Heterocyclic Chemistry |
Volume | 25 |
Issue number | 5 |
DOIs | |
State | Published - 1988 |
ASJC Scopus subject areas
- Organic Chemistry