Heating 4-methoxy-1-naphthol with a 1,1-diarylprop-2-yn-1-ol gave the 2,2-diaryl-6-methoxy-2H-naphtho[1,2-b]pyran together with the novel merocyanine, (E)-2-[3',3'-bis(aryl)allylidene]-4-methoxynaphthalen-1(2H)-one. Brief UV-irradiation of the pyran favoured the formation of the (Z)-merocyanine with longer irradiation and/or acidic conditions favouring the… (More)
Changes were made to the teaching method and examination paper for a Level 1 Mechanics module taken by a cohort of physics students with the aim of encouraging deep learning. The cooperative learning approach of Johnson et al (1991) was used to pose conceptual questions for interactive discussion. Quantitative and qualitative methods were used to evaluate… (More)
The chemical name of the title compound in the paper by Jenkinson, Fenton, Booth, Fleet & Watkin [Acta Cryst. (2009), E65, o610-o611] is corrected.[This corrects the article DOI: 10.1107/S1600536809006357.].
X-ray crystallography confirmed the structure of the title triazole, C(11)H(15)N(3)O(5), formed from a single-step reaction of a sugar azide with a brominated ylid. The absolute configuration was determined by the use of d-ribose as the starting material. The six-membered ring is in a half-chair conformation. The crystal structure exists as chains of O-H⋯O… (More)
1-De-oxy-d-galactitol, C(6)H(14)O(5), exists in the crystalline form as hydrogen-bonded layers of mol-ecules running parallel to the ac plane, with each mol-ecule acting as a donor and acceptor of five hydrogen bonds.
The relative configuration of tert-butyl 2-de-oxy-4,5-O-iso-propyl-idene-d-gluconate, C(13)H(24)O(6), an inter-mediate in the synthesis of 2-de-oxy sugars, was determined by X-ray crystallography, and the crystal structure consists of chains of O-H⋯O hydrogen-bonded mol-ecules running parallel to the a axis. There are two mol-ecules in the asymmetric unit.… (More)
Although 6-azido-6-de-oxy-l-galactose in aqueous solution is in equilibrium between the open-chain, furan-ose and pyran-ose forms, it crystallizes solely as 6-azido-6-de-oxy-α-l-galactopyran-ose monohydrate, C(6)H(11)N(3)O(5)·H(2)O, with the six-membered ring adopting a chair conformation. The structure exists as hydrogen-bonded chains, with each mol-ecule… (More)
UK National statistics for science, engineering and technology studies and careers confirm the under-representation of women in these disciplines. A literature review formed the basis for developing survey questionnaires exploring issues of female students' attraction to, and retention in, engineering and technology studies. Findings indicate that having… (More)
The crystalline form of 1-de-oxy-l-mannitol, C(6)H(14)O(5), exists as an extensively hydrogen-bonded structure with each mol-ecule acting as a donor and acceptor for five hydrogen bonds. There are no unusual crystal-packing features; the absolute configuration was determined from the use of 6-de-oxy-l-mannose (l-rhamnose) as the starting material.