✍ Scribed by W. Depmeier; Hans Schmid; F. Haenssler
No coin nor oath required. For personal study only.
The chromatographic conditions mentioned in Fig. 1 were selected for the purpose of direct comparison between various spiroketals. In cases where no baseline separation is achieved, e.g., for 2e, 2g, and 3, careful optimization of gas chromatographic parameters (temperature, column length, flow rate, complex concentration) should and will permit complete resolution. The application of the described enantiomer resolution for the determination of configurational compositions of natural spiroketals (e.g., pheromones) along with the study of their chiroptical properties is in progress.
V.S. thanks the Deutsche Forschungsgemeinschaft and Fonds der Chemischen Industrie for support and Firma Haarmann and Reimer, Holzminden, W.Germany, for a gift of R-pulegone.
📜 SIMILAR VOLUMES
## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
## Abstract The high‐pressure phase of title is synthesized from a mixture of MnO~2~ and B~2~O~3~ in a molar ratio of 2:1 in a modified Walker‐type multianvil apparatus (6.5 GPa, 1100 °C, 10 min).
In the title compound, [Na(C 5 H 5 NO) 4 ]BF 4 , each Na + ion, lying on an inversion centre, is octahedrally coordinated by four bridging and two terminal pyridone ligands, creating a cationic coordination polymer chain with tetrafluoroborate anions occupying the spaces between the chains.