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Synthesis 1992; 1992(7): 639-640
DOI: 10.1055/s-1992-26184
short paper
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Convenient Synthesis of Large Tetraazamacrocycles Bearing Alkylene, Cyclophane and Crown Ether Type Skeletons

Takenori Tomohiro* , Parviz Ahmadi Avval, Hiroaki Yohmei Okuno
  • *National Chemical Laboratory for Industry (NCLI), Tsukuba, Ibaraki 305, Japan
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Publication Date:
17 September 2002 (online)

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A series of large tetraazamacrocycles with 28- to 44-membered rings consisting of alkylene, phenylene or ether type backbones has been prepared without the use of high-dilution conditions in practically significant yields (25-42%). The reaction can be carried out with a 10 mmol concentration and is applicable to a variety of combinations of different kinds of chains.