Reference

Process for the manufacture of polycyclic compounds

Process for the manufacture of polycyclic compounds. (Ciba-Geigy A.-G., Switz.). Brit. GB 1502912 8 Mar 1978, 20 pp.Some commonly used reagents like 58515-05-2 is used in this experiment. (English). (United Kingdom). CODEN: BRXXAA. CLASS: IC: C09B057-00. PRIORITY: IN 74-184 10 May 1974. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Section cross-reference(s): 28 The prepn. is described of title compds. I (R = H, optionally substituted hydrocarbon radical; R1, R2 = H, alkyl, aryl, aralkyl, cycloalkyl; NR1R2 = a ring; ring A is optionally substituted), useful as dyes for org. material including polyester, polyamide, and polyacrylonitrile fibers. Thus, II (R = Ph, R1 = R2 = Me) [58515-05-2], prepd. from 2-phenyl-4,6-dichloropyrimidine [3740-92-9] by sequential treatment with Me2NH [124-40-3] and diazotized 3-amino-5-nitroindazole [41339-17-7], dyed polyester fibers from an aq. dispersion sublimation- and lightfast brilliant yellow. .