N-(4-Arylazobenzoyl)-1H-benzotriazoles 3 react with amino acids 4 and amines 6 to give azo-dye labeled amino acids (5a-m) and amines (7a-n) in high yields (74-100%) with retention of chirality.

References 1 Deming, J.W. (2002) Psychrophiles and polar regions. Curr. Opin. Microbiol. 5, 301–309 2 Deming, J.W. and Eicken, H. (2004) Life in ice. In Planets and Life: The Emerging Science of Astrobiology (Baross, J.A. and Sullivan, W., eds), Cambridge University Press (in press) 3 Bowman, J.P. et al. (1997) Diversity and association of psychrophilic bacteria in antarctic sea ice. Appl. Envi...

The oxidative processing by ozone of the particulate amines octadecylamine (ODA) and hexadecylamine (HDA) is reported. Ozonolysis of these amines resulted in strong NO−2 and NO − 3 ion signals that increased with ozone exposure as monitored by photoelectron resonance capture ionization aerosol mass spectrometry. These products suggest a mechanism of progressive oxidation of the particulate amin...

The unexpected tendency of amines and functionalized hydrazines to reduce ethyl 3-phenylquinoxaline-2-carboxylate 1,4-di-N-oxide (1) to afford a quinoxaline 1c and mono-oxide quinoxalines 1a and 1b is described. The experimental conditions were standardized to the use of two equivalents of amine in ethanol under reflux for two hours,with the aim of studying the distinct reductive profiles of th...

B(OCH2CF3)3, prepared from readily available B2O3 and 2,2,2-trifluoroethanol, is as an effective reagent for the direct amidation of a variety of carboxylic acids with a broad range of amines. In most cases, the amide products can be purified by a simple filtration procedure using commercially available resins, with no need for aqueous workup or chromatography. The amidation of N-protected amin...

14. Barber, M., Bordoli, R. S., Sedgwick, R. D. & ‘lylcr, A. N . ( 198 I ) J. Chem. Soc. Chem. Commirri. 7,325-327 Biemann, K. & Martin, S. A. ( 1 987) Moss Spectrom. Rev. 6 , 1-76 Gibson, B. W. & Biemann, K. (1984) /’roc. Nor/. Aciid. Sci. U.S.A. 8 I , 1956I960 Allmaier, G., Chao, B. H., Khorana, H. G. & Biemann, K. ( 1986) in Annual Conference on Moss Spectrometty w i r l Allied Topics 34h, p...

A simple, efficient, and cost-effective procedure for the N-tert-butoxycarbonylation and N-formylation of amines (primary, secondary) respectively, with di-tert-butyl dicarbonate and 85% aqueous formic acid under solvent-free condition using B(OSO3H)3/SiO2 (SBSA) as a heterogeneous and recyclable catalyst has been developed. We demonstrated that the resulting catalyst is applicable to various a...

A malignolipin-like material has been identified in the tissue and blood of both normal and tumor-bearing individuals of several species of animals and of man. The material isolated by us, which had Chromatographie characteristics identical with those defining malignolipin (Kosaki), was found to be hetero geneous and to consist of lipid loosely associated with 3 amines, 1 of which was identifie...

[1] Field observations and quantum chemical calculations suggest that amines can be important for formation of nanometer size particles. Amines and ammonia often have common atmospheric emission sources and the similar chemical and physical properties. While the effects of ammonia on aerosol nucleation have been previously investigated, laboratory studies of homogeneous nucleation involving ami...

The objective of this study was to investigate the antimicrobial activities of saturated fatty acids and fatty amines against methicillin-resistant Staphylococcus aureus (MRSA). The antimicrobial activity of saturated fatty acids and fatty amines was determined by oxygen meters with multi-channels and disposable oxygen electrode sensors (DOX-96). Lauric acid, the most effective among the satura...