1,3-diaza-cycloalkenes prepn - by reacting aldehydes with diamines and sulphur

摘要

Cpds. of formula (I) (where R1 is H, an aliphatic, cycloaliphatic, araliphatic or heterocyclic residue, or an aromatic residue which is unsubstd. at o- and o'-posns; and U is -CHR2-CHR2- or -CHR2-CHR2-CHR3- in which R2 and R3 are each H or an aliphatic residue, or the residues R2 are linked with each other so as to form a ring), are useful as adjuvants in the textile and rubber inds., as (inters for) plant-protection agents and dyes, are prepd. by reacting an aldehyde R1-CHO with a diaminoalkane H2-N-Y-NH2 and S.