Diethylenetriamine → UV-328

Participants

Reaction Steps

Example 1 is repeated, except that an equivalent amount of 2-nitro-2'-hydroxy-3', 5'-di-tert.-amylazobenzene (91.6% pure) is used instead of 2-nitro-2'-hydroxy-5'-methylazobenzene and a mixture of 60 g of xylene and 40 g of diethylenetriamine is used instead of 80 g of xylene and 20 g of diethylenetriamine. The work up is analogous (filtering off the catalyst, separating off the amine bottom phase, extracting the remaining amine from the xylene top phase with water, concentration and crystallization from xylene/methanol). The title product is isolated in a yield of 86.5% of theory. Melting point: 80°-82° C.

Provenance & Evidence