The tandem phospha-Friedel Crafts reaction transforms dichloro(m-teraryl)phosphine to the corresponding triarylphosphine derivatives containing curved pi-conjugated frameworks with a phosphorus ring junction. The rigid molecular frameworks enable these unprecedented phosphine compounds to hold an extended pi-conjugation spread over the whole molecule.
Chirally enshrouded 2,6-diarylbenzoic acids with two-fold symmetry
作者:Chao-Tsen Chen、Raj Chadha、Jay S. Siegel、Kenneth Hardcastle
DOI:10.1016/0040-4039(95)01800-w
日期:1995.11
The synthesis and characterization of a new design of W-shaped chiral clefts with C-2 symmetry is presented. The molecules are based on the 2,6-diarylbenzoic acid motif. A series of syn/anti isomers are discussed with respect to their symmetry,configurational stability, and suitability for the development of chiral materials.