21. An added tertiary amine like tributylamine forms a 1 : 2 adduct with the diazapyrene and the complex gets dethreaded. 22. These reactions are generally run in the presence of a weak base, such as sodium carbonate or tertiary amines . 23. Oxidation of the tertiary amine then occurs and an iminium ion is formed "'5 " '. 24. Examples, such as bicine and tricine, contain a basic secondary or tertiary amine fragment together with a carboxylic acid fragment. 25. Human TAAR5 ( hTAAR5 ) is a functional trace amine-associated receptor which acts as an olfactory receptor for tertiary amines . 26. Tertiary amines are able to react with benzenesulfonyl chloride under a variety of conditions; the test described above is not absolute.27. Therefore, for laboratory purposes, " N "-alkylation is often limited to the synthesis of tertiary amines . 28. This became the basis of what is now known as the Hofmann elimination, a method for converting quaternary amines into tertiary amines . 29. This reaction is referred to as the blowing reaction and is catalyzed by tertiary amines like bis-( 2-dimethylaminoethyl ) ether. 30. While primary, secondary, and tertiary amines were stable when distilled at high temperatures under alkaline conditions, the quaternary amine was not.