Convenient Synthesis of Large Tetraazamacrocycles Bearing Alkylene, Cyclophane and Crown Ether Type Skeletons

Takenori Tomohiro; Parviz Ahmadi Avval; Hiroaki Yohmei Okuno

doi:10.1055/s-1992-26184

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

Abstract

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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.

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