反应详情

Example 1 is repeated, except that an equivalent amount of 2-nitro-2'-hydroxy-5'-tert.-octylazobenzene (93% pure) is used instead of 2-nitro-2'-hydroxy-5'-methylazobenzene and a mixture of 60 g of xylene and 40 g of diethylenetriamine instead of 80 g of xylene and 20 g of diethylenetriamine. The hydrogenation is carried out at 45° C. The title product is isolated in a yield of 92% of theory. Melting point: 101°-103° C.

1. customis carried out at 45° C