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The racemic title compound, C3H5Br2NO, was crystallized from methanol. In the crystal, adjacent mol­ecules are linked through N—H...O hydrogen bonds, forming chains along the c-axis direction. These chains are linked through N—H...O hydrogen bonds, forming an undulating two-dimensional network lying parallel to the bc plane. There are also short Br...Br contacts present [3.514 (3) Å].

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The title compound, C17H26O10, was formed by a Koenigs–Knorr reaction of 2,3,4,6-tetra-O-acetyl-α-D-glucopyranosyl bromide and propan-2-ol. The central ring adopts a chair conformation. The crystal does not contain any significant inter­molecular inter­actions.

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The title compound [systematic name: (2R,3R,4S,5R,6R)-2-(acet­oxy­meth­yl)-6-propoxytetra­hydro-2H-pyran-3,4,5-triyl triacetate], C17H26O10, was formed by a Koenigs–Knorr reaction of 2,3,4,6-tetra-O-acetyl-α-D-glucopyranosyl bromide and n-propanol. The central ring adopts a chair conformation. The crystal does not contain any significant inter­actions such as hydrogen bonds.

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The title compound, {2-[(2-carbamoyleth­yl)amino]-3-methyl­penta­noic acid}, C9H18N2O3, is of inter­est with respect to its biological activity. It was formed during an addition reaction between acryl­amide and the amino acid isoleucine. The crystal structure is a three-dimensional network built up by inter­molecular N—H...O and O—H...N hydrogen bonds.

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The title compound, C18H25BrO, crystallized as a racemate with four independent mol­ecules in the asymmetric unit. In the crystal, three of these four mol­ecules are linked via C—Br...Br—C halogen bonds [Br...Br = 3.662 (2) and 3.652 (2) Å], forming dimers.
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