Detail of "50270-27-4"

Reference

1,3-Diaza-9-thiaanthracene-2,4-diones and a photopolymerizable mixture containing them

1,3-Diaza-9-thiaanthracene-2,4-diones and a photopolymerizable mixture containing them. Wingen, Rainer; Horn, Klaus; Lutz, Walter (Hoechst A.-G. , Fed. Rep.In this study，90825-53-9 is also used. Ger.). Ger. Offen. DE 3232621 A1 8 Mar 1984, 29 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C07D495-04; C08F002-50. APPLICATION: DE 82-3232621 2 Sep 1982. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and Related Products) Section cross-reference(s): 28, 74 The title compds. I [R1, R3, R4 = H, halogen, alk(ox)yl, carbo(alko)xy; R2 = H, alkoxyl, carbo(alko)xy; or 2 of these participate in an annelated arom. ring] are initiators for photopolymn. with high sensitivity at 425-480 nm. Thus, stirring 1 mol 2,4,6-trichloro-5-pyrimidinecarboxaldehyde [50270-27-4] with 1 mol PhSH [108-98-5] and 1.1 mol Et3N in THF at -50° to -30° gave 71.9% crude 2,4-dichloro-6-(phenylthio)-5-pyrimidinecarboxaldehyde [90825-52-8], of which 1 part was stirred with 20 parts 98% H2SO4 at 110-150° to give 62.3% diazathiaanthracenedione I (R1-R4 = H) [80947-67-7]. A mixt. of Me methacrylate-methacrylic acid polymer 4.0, trimethylolethane triacrylate 4.0, azo dye Cu complex 0.08, the above I 0.21, EtOCH2CH2OH 38, and BuOAc 18 parts was coated on roughened, anodized, 0.3-mm Al to 25 g/m2 (dry basis) dried, coated with 5 g/m2 poly(vinyl alc.), dried, exposed through a 13-step neg. to a 5-kW halide lamp for 40 s, heated 1 min at 120°, and developed in aq. silicate to give a plate which printed 100,000 impressions with sensitivity stage no. 2 completely developed. .

5-Deazariboflavin

5-Deazariboflavin. (Toyo Jozo Co.Several substances are used for example 50270-27-4 and 3051-94-3 which are their cas registry numbers., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 59005186 A2 12 Jan 1984 Showa, 4 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C07D471-04. APPLICATION: JP 82-115175 1 Jul 1982. DOCUMENT TYPE: Patent CA Section: 33 (Carbohydrates) Section cross-reference(s): 28 5-Deazariboflavin (I) was prepd. by condensation of 6-chloro-5-formyluracil (II) with N-D-ribityl-3,4-xylidine (III). Thus, stirring 8 g 2,4,6-trichloro-5-formylpyrimidine with 5 g K2CO3 in 2:1 EtOH-H2O 3 h at room temp. gave 90% II. Stirring 0.89 g II with 1 g III in DMF 4-5 h at 100° gave 88.4% I. .