Detail of "3067-19-4"

Reference

Analysis of a laminated enzyme membrane reactor for continuous resolution of amino acids

Analysis of a laminated enzyme membrane reactor for continuous resolution of amino acids. Iborra, Jose Luis; Obon, Jose Maria; Manjon, Arturo; Canovas, Manuel (Fac. Chem., Univ. Murcia, Murcia 30001, Spain). Biotechnol. Appl. Biochem., 15(1), 22-30 (English) 1992. CODEN: BABIEC. ISSN: 0885-4513. DOCUMENT TYPE: Journal CA Section: 16 (Fermentation and Bioindustrial Chemistry) Section cross-reference(s): 7 Aminoacylase (EC 3.5.1.14) was used as a model system to analyze the behavior of a tangential flow laminated enzyme membrane reactor. An anionic exchange nylon-laminated membrane was utilized as the solid support for aminoacylase immobilization with N-acetyl-DL-valine as substrate.Several substances with their cas registry numbers 9012-37-7 and 3067-19-4 may be metioned in this study. Various parameters such as recycling and output flow rates, enzyme load on support, and substrate concn. were evaluated. The optimum recycling flow rate was 30 mL/min, which allowed for high catalytic efficiency with good operational stability and avoided mass transfer limitations within the system. Substrate concns. of ￡0.3M were assayed without enzyme loss. Although the enzyme concn. within the reactor system was not high (10 g/L) it showed a remarkable productivity (0.35 kg L-valine/L-day, 80% conversion) and long operational stability (161 days half-life). The system is useful for amino acid resoln. A simple mass balance equation including the parameters involved for reactor performance is proposed to model the behavior of the system. .

Palladium-catalyzed amidocarbonylation improved by recyclable ionic liquids

All Rights Reserved. Palladium-catalyzed amidocarbonylation improved by recyclable ionic liquids. Zhu, Bingchun; Jiang, Xuanzhen (Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, Peop. Rep. China). Synlett, (17), 2795-2798 (English) 2006 Georg Thieme Verlag. CODEN: SYNLES. ISSN: 0936-5214. DOCUMENT TYPE: Journal CA Section: 34 (Amino Acids, Peptides, and Proteins) Section cross-reference(s): 23, 28 Two types of ionic liqs. (halide anion ionic liqs. and Bronsted acidic ionic liqs.) were applied to improve the palladium-catalyzed amidocarbonylation. Using this method, a few racemic N-acyl a-amino acids were synthesized from aldehydes in good yields.There are some commonly used reagents with their cas registry numbers 603-35-0 and 3067-19-4 in this article. In addn., both the palladium catalyst and the ionic liqs. could be recycled at least five times without significant loss in catalytic activity. .