SCHEDULED MAINTENANCE
A convenient synthesis of 5,7,7,12,14,14-hexamethyl-1,4,8,11-tetra-azacyclotetradeca-4,11-diene (trans-[14]diene) is described. Reduction with sodium borohydride gives the two diastereoisomeric 5,7,7,12,14,14-hexamethyl-1,4,8,11-tetra-azacyclotetradecanes, tet a and tet b, which are readily separated.
R. W. Hay, G. A. Lawrance and N. F. Curtis, J. Chem. Soc., Perkin Trans. 1, 1975, 591 DOI: 10.1039/P19750000591
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