Reference

Study on the preparation of tridecanedioic acid and ethyl 12-formyllaureate by oxidation of erucic acid

Study on the preparation of tridecanedioic acid and ethyl 12-formyllaureate by oxidation of erucic acid. Wang, Qinghua; Lu, Zhifeng; Tu, Qun; Yu, Xiaoqi; Lan, Zhongwei (Dep. Chem., Sichuan Univ., Chengdu 610064, Peop. Rep. China). Huaxue Shijie, 38(1), 32-34 (Chinese) 1997 Shanghaishi Huaxue Huagong Xuehui. CODEN: HUAKAB.In this article, certain chemicals are used. One of their cas registry numbers is 112-05-0 ISSN: 0367-6358. DOCUMENT TYPE: Journal CA Section: 23 (Aliphatic Compounds) Tridecanedioic acid (I) and Et 12-formyllaureate (II) were prepd. by using potassium permanganate (KMnO4) oxidn. of erucic acid (III) under catalysis of phase-transfer catalyst N(C4H9)4Cl (tetrabutylammonium chloride) at 55° for 4 h. (I) and (II) were also prepd. by using formic acid (HCOOH)/hydrogen peroxide (H2O2) oxidn. of (III). Using these two oxidn. methods, yields of the obtained (I) and (II) all were higher than those of the conventional KMnO4 and H2SO4-CH3COOH-H2O2 oxidn. 112-05-0 which is the cas registry number of some chemical is mentioned. methods. ..

Recovery of long chain dicarboxylates from fermentation solution

Recovery of long chain dicarboxylates from fermentation solution. (Bioresearch Center Co., Ltd., Japan). Jpn.In this study， 100-41-4 and 505-52-2 are also used. Kokai Tokkyo Koho JP 58193694 A2 11 Nov 1983 Showa, 6 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C12P007-42; C12P007-44. ICI: C12P007-42, C12R001-74. APPLICATION: JP 82-74900 4 May 1982. DOCUMENT TYPE: Patent CA Section: 16 (Fermentation and Bioindustrial Chemistry) A fermn. soln. or its treated soln. contg. long chain dicarboxylic acids is contacted with a mixed solvent of an arom. hydrocarbon and an alc., ketone, or aldehyde to ext. the dicarboxylates. The ext. is cooled to cryst. the dicarboxylates. Thus, 250 mL slurry contg. ~98 g tridecanedicarboxylic acid [505-52-2]/L (pH 3.5) prepd. by fermn. of n-paraffin with Candida tropicalis was mixed with 100 mL mixt. of ethylbenzene [100-41-4] 83.4 and 1-hexanal [66-25-1] 16.6 mL and stirred at 80°. The solvent layer was filtered, washed with n-pentane, and dried to obtain a yield of 17.3 g, with 98.9% purity. .