Detail of "938-97-6"

Reference

Resolution of d,l-menthol

Resolution of d,l-menthol. House, David W. (UOP Inc. , USA). U.S. US 4418225 A 29 Nov 1983, 5 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C07C035-12. NCL: 568829000.There are some reagents with their cas registry numbers 89503-29-7 and 938-97-6 are used in this study. APPLICATION: US 82-338443 8 Jan 1982. DOCUMENT TYPE: Patent CA Section: 30 (Terpenes and Terpenoids) (±)-Menthol was resolved via esterification with optically active phenylglycine (I). Thus, refluxing 5.0 g D-(-)-I with 6.0 g (±)-menthol in benzene-toluene contg. p-MeC6H4SO3H gave 2.85 g a mixt. of the diastereomeric esters, sepn. of which (2.44 g) via silica gel chromatog. gave 0.80 g and 1.46 g the l-d and l-l diastereomer (II), resp. Hydrolysis of 1.04 g II with NaOH gave 0.41 g l-menthol. .

Microbial conversion of hydantoins to D-a-amino acids

Microbial conversion of hydantoins to D-a-amino acids. Takeichi, Mamoru; Hagiwara, Takashi; Tarukawa, Hitoshi; Tawaki, Shinichiro; Makiguchi, Nobuyoshi (Mitsui Toatsu Chemicals, Inc., Japan). Jpn. Kokai Tokkyo Koho JP 61212292 A2 20 Sep 1986 Showa, 4 pp. (Japan) CODEN: JKXXAF. CLASS: ICM: C12P013-04. ICI: C12P013-04, C12R001-78. APPLICATION: JP 85-53396 19 Mar 1985. DOCUMENT TYPE: Patent CA Section: 16 (Fermentation and Bioindustrial Chemistry) D-a-Amino acids RCH(NH2)CO2H (R = Me, Me2CH, Me2CHCH2, MeEtCH, MeSCH2CH2, HOCH2, Ph, p-hydroxyphenyl, PhCH2, indolylmethyl) are produced by incubating hydantoins I with Hansenula. Thus, H. polymorpha NRRL Y-2423 was cultured in a medium contg. glucose 2, I (R = Me2CH) 0.5, malt ext.In this article, certain chemicals are used. One of their cas registry numbers is 348-67-4 0.1, yeast ext. 0.3, KH2PO4 0.158, MgSO4.7H2O 0.05, and CaCl2.2H2O 0.033% at 28° for 24 h. The cells were collected and incubated with 5 g/L I (R = Ph) in 0.1 M phosphate buffer (pH 7.5) at 36° for 20 h to give 1.0 mg/mL D-phenylglycine. .