Detail of "6289-46-9"

Reference

Preparation of succinylsuccinate diesters from succinate diesters in the presence of sulfoxides

Preparation of succinylsuccinate diesters from succinate diesters in the presence of sulfoxides. Uohama, Misao; Takahashi, Katsuji (Dainippon Ink and Chemicals, Inc., Japan). Jpn. Kokai Tokkyo Koho JP 04005256 A2 9 Jan 1992 Heisei, 3 pp. (Japan). CODEN: JKXXAF.Some commonly used reagents like 6289-46-9 and 106-65-0 are used in this experiment. CLASS: ICM: C07C069-40. ICS: C07C067-333. APPLICATION: JP 90-107755 24 Apr 1990. DOCUMENT TYPE: Patent CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) Section cross-reference(s): 24 Succinylsuccinate diesters, useful as intermediates for quinacridone pigments, are prepd. by condensation of succinate diesters in the presence of bases and sulfoxides in solvents. Di-Me succinate was added dropwise to a soln. of MeONa/MeOH and DMSO in xylene at 120° over 30 min and the mixt. was stirred at 120° for 1 h to give 89.5% di-Me succinylsuccinate, vs. 78.5% when 1,3-dimethyl-2-imidazolidinone was used instead of DMSO. .

Luminescent compounds, process for the preparation thereof, and light emitting devices

Luminescent compounds, process for the preparation thereof, and light emitting devices. Nakaya, Tadao; Ishitobi, Tatsuro; Saikawa, Tomoyuki; Yamauchi, Takao (Taiho Industries, Co. Ltd., Japan). PCT Int. Appl. 6289-46-9 is just another one chemical used in this study. WO 2004026809 A1 1 Apr 2004, 49 pp. DESIGNATED STATES: W: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW; RW: AT, BE, BF, BJ, CF, CG, CH, CI, CM, CY, DE, DK, ES, FI, FR, GA, GB, GR, IE, IT, LU, MC, ML, MR, NE, NL, PT, SE, SN, TD, TG, TR. (Japanese). (World Intellectual Property Organization). CODEN: PIXXD2. CLASS: ICM: C07C229-62. ICS: C07C227-10; C09K011-06; H05B033-14. APPLICATION: WO 2003-JP11691 12 Sep 2003. PRIORITY: JP 2002-270822 17 Sep 2002. DOCUMENT TYPE: Patent CA Section: 74 (Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes) Section cross-reference(s): 73 The invention aims at providing luminescent compds. which can exhibit luminescence at high purity and with high brightness and are excellent in fastness, a process for the prepn. thereof, and light-emitting devices capable of emitting light with high brightness, and relates to luminescent compds. characterized by having a structure represented by I (R = alkyl and the two Rs may be the same or different from each other; Y = -COOR1; R1 = alkyl, -COR2; R2 = alkyl, aryl, or halogeno; the no. of Ys bonded to each benzene ring is 1 to 3 and Ys are bonded to the benzene rings at positions meta and/or para to the bonding sites of the nitrogen atoms, with the proviso that Y(s) on one benzene ring may be the same as Y(s) on the other benzene ring or different therefrom, a process for the prepn. of the compds.). .