Detail of "55067-10-2"

Reference

Pyrimidine azo pigments

Pyrimidine azo pigments. Lorenz, Manfred; Schuendehuette, Karl Heinz; Bornatsch, Wolfgang (Bayer A.-G. , Fed. Rep. Ger.). Ger. Offen. DE 3307508 A1 3 Nov 1983, 48 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C09B029-036; C09B041-00. APPLICATION: DE 83-3307508 3 Mar 1983. PRIORITY: DE 82-3215877 29 Apr 1982. DOCUMENT TYPE: Patent CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) The title azo compds. RN:NR1 (I; R 1 R1, R = R2 or R3 or their tautomers and R1 = coupling component residue) were prepd. by coupling R1H with II or III, prepd. by resp. reaction of R2H or R3H with Z(SO2N3)n [where Z = alkyl or aryl residue, n = 1-3, R4, R6 = O, N(CN), or substituted imino, and R5, R7 = H, heterocyclic residue, optionally substituted alkyl, cycloalkyl, aryl, aralkyl, or amino].In this experiment, several chemicals are used like 86264-28-0 and 88638-15-7 Thus, benzenesulfonyl hydrazide [80-17-1] was treated with HNO2 to give an emulsion of benzenesulfonyl azide [938-10-3], and barbituric acid [67-52-7] was added to the mixt. to give a suspension of Na diazobarbiturate [88638-09-9]. To this suspension 2-cyaniminobarbituric acid [55067-10-2] was added to give Na monocyaniminobarbiturate [88638-10-2] and the suspension was acidified to pH 1 with HCl and heated at 95° to give (IV) [86248-19-3], coloring lacquer and plaster in clear orange shades. .