Reference

Microbial production of b-substituted propionic acids or their amides

Microbial production of b-substituted propionic acids or their amides. (Nitto Electric Industrial Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 58201992 A2 25 Nov 1983 Showa, 5 pp. (Japanese). 5875-24-1 and 763-35-9 are also occured in this study. (Japan). CODEN: JKXXAF. CLASS: IC: C12P007-52; C12P013-02. ICI: C12P007-52, C12R001-15; C12P007-52, C12R001-365. APPLICATION: JP 82-81537 17 May 1982. DOCUMENT TYPE: Patent CA Section: 16 (Fermentation and Bioindustrial Chemistry) b-Substituted propionic acids RCH2CH2COOH (R = halo, OH, OMe, NHMe, SH, SMe, etc.) or their amides are prepd. from the corresponding nitriles with nitrile-hydrating Corynebacterium or Nocardia. Thus, Corynebacterium N-774 was shake-cultured at 30° for 3 days in a pH 7.2 medium contg. glucose 10, peptone 5, yeast ext. 3, and malt ext. 3 g/L. The broth was centrifuged and the cells washed with phosphate buffer. The wet cells (0.5 g, ~80% H2O) were added to 100 g 0.05M phosphate buffer (pH 8.5) contg. 2% b-hydroxypropionitrile (I) [109-78-4] and treated at 30° for 1 h with stirring. The resulting mixt. contained 2.5% b-hydroxypropionamide (II) [2651-43-6] and no b-hydroxypropionic acid [503-66-2]. The reaction mixt. (1 L) was centrifuged and the supernatant concd. and the residue extd. with MeCN to give a 75.8% yield of II. Similarly, b-hydroxypropionic acid was prepd. from I by incubation at 30° for 24 h. Also prepd. were b-chloropropionic acid [107-94-8] and its amide [5875-24-1], b-mercaptopropionic acid [107-96-0] and its amide [763-35-9], and N,N'-dimethyl-b-aminopropionamide [50836-82-3]. .

Radiation-induced modification of liquid polybutadienes

Radiation-induced modification of liquid polybutadienes.Some chemicals with cas registry numbers like 558-13-4 and 14814-09-6 are also used. Priola, A.; Ferrero, F.; Panetti, M. (Dip. Sci. Mater. Ing. Chim., Politec. Torino, Turin, Italy). Pitture Vernici, 59(10), 85-9 (Italian) 1983. CODEN: PIVEAY. ISSN: 0048-4245. DOCUMENT TYPE: Journal CA Section: 42 (Coatings, Inks, and Related Products) Liq. polybutadiene (I) [9003-17-2] of 1,4- or 1,2-configuration was modified by a radical addn. reaction of 3-thiopropionic acid [107-96-0], ethylene glycol dithioglycolate (II) [123-81-9], mercaptopropyltriethoxysilane [14814-09-6], or CBr4 to the I double bonds in the presence of UV irradn. Crosslinked products were prepd. from I contg. COOH groups by the reaction with epoxy resins, or from I contg. Si(OEt)3 groups by crosslinking at room temp. due to condensation of alkoxysilane groups. The addn. of II to I, under identical conditions, led to the formation of products with high gel content. The addn. of CBr4 to I was proven by detg. the Br content. The reactivity of I having 1,2-configuration was higher than that of I of 1,4-configuration. The modified I was used in coatings. .