ABSTRACT 1,5,9,13‐Tetraazacyclohexadecane (16aneN 4 ) is a well‐known macrocyclic tetraamine. However, not many variations of chiral 16aneN 4 are known. This paper reports the development of an optically active 16aneN 4 having four chiral centers in the skeleton. As an application of the obtained tetraamine, the corresponding Ni complex was synthesized, and its structure was unambiguously confirmed by x‐ray diffraction analysis.
Takahashi et al. (2026) studied this question.