Results 1 to 10 of about 34,795 (237)

Melaminium hydrogen malonate [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2012
The melaminium (2,4,6-triamino-1,3,5-triazin-1-ium) cation in the title compound, C3H7N6+·C3H3O4−, is essentially planar, with a r.m.s. deviation of the non-H atoms of 0.0085 Å. Extensive hydrogen bonding of the types N—H...N and N—H...O between cations and cations and between cations and hydrogen malonate (2-carboxyethanoate) anions leads to the ...
Matthias Weil, Barbara Froschauer
openaire   +4 more sources

Malonates in Cyclocondensation Reactions [PDF]

open access: yesMolecules, 2001
The use of malonates such as diethyl malonates 9, (chlorocarbonyl)ketenes 15 and bis(2,4,6-trichlorophenyl) malonates 18 as reagents for cyclocondensation with 1,3-dinucleophiles to give six-membered heterocycles is described. Further attempts to use malonates such as bis(trimethylsilyl) malonates 19 and bis(carbamimidoyl) malonates 29 as new ...
Wolfgang Stadlbauer   +4 more
openaire   +3 more sources

Synthesis of novel β-aminocyclobutanecarboxylic acid derivatives by a solvent-free aza-Michael addition and subsequent ring closure [PDF]

open access: yes, 2011
Novel beta-aminocyclobutanecarboxylic acid derivatives were prepared via a sequential solvent-free aza-Michael addition of benzophenone imine across 3-halopropylidenemalonates and base-induced ring closure.
Aitken   +44 more
core   +1 more source

A Three-Dimensional Dynamic Supramolecular "Sticky Fingers" Organic Framework. [PDF]

open access: yes, 2019
Engineering high-recognition host-guest materials is a burgeoning area in basic and applied research. The challenge of exploring novel porous materials with advanced functionalities prompted us to develop dynamic crystalline structures promoted by soft ...
Costa, José Sánchez   +8 more
core   +4 more sources

Crystallization and preliminary X-ray analysis of neoagarobiose hydrolase from Saccharophagus degradans 2-40 [PDF]

open access: yes, 2009
Many agarolytic bacteria degrade agar polysaccharide into the disaccharide unit neoagarobiose [O-3,6-anhydro-α-L-galactopyranosyl-(1→3)-D-galactose] using various β-agarases.
Araki   +18 more
core   +2 more sources

CHROM-MALONATES. [PDF]

open access: yesJournal of the American Chemical Society, 1903
n ...
openaire   +1 more source

Gas phase carbon acidity and correlations with aqueous pK~a~ values: A comparison of B3LYP/6-311++G(d,p), Gaussian-4 (G4), and experimental approaches [PDF]

open access: yes, 2010
Gas phase standard state (298.15 K, 1 atm) calculations were conducted at the B3LYP/6-311++G(d,p) density functional and the Gaussian-4 (G4) composite method levels of theory to estimate the acidity of various carbon acids.
Kaya Forest, Sierra Rayne
core   +2 more sources

Taming tosyl azide: the development of a scalable continuous diazo transfer process [PDF]

open access: yes, 2016
Heat and shock sensitive tosyl azide was generated and used on demand in a telescoped diazo transfer process. Small quantities of tosyl azide were accessed in a one pot batch procedure using shelf stable, readily available reagents. For large scale diazo
Collins, SG   +5 more
core   +1 more source

Lack of continuity between Cronobacter biotypes and species as determined using multilocus sequence typing [PDF]

open access: yes, 2013
The accuracy of the Cronobacter biotyping scheme was compared with the 7-loci multilocus sequence typing scheme. Biotyping did not reliably assign species level identification, as only half (17/31) of the biotype variants were unique to any of the seven ...
Baldwin   +19 more
core   +1 more source

Biocatalytic Route to Chiral Precursors of β-Substituted-γ-Amino Acids [PDF]

open access: yes, 2011
In this work, we utilized commercial lipases (from Thermomyces lanuginosa, Rhizopus delemar, and Mucor miehei) as biocatalysts for the efficient synthesis of precursors of β-substituted-γ-amino acids.
Martinez, Carlos A., Mukherjee, Herschel
core   +2 more sources

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