Syntheses of the title heterohelicenes are described and their NMR spectra showed the conspicuous phenomena reflecting the overlapping of aromatic rings.
Photochemical synthesis and structural properties of high membered thiohelicenes
作者:Tullio Caronna、Roberta Sinisi、Luciana Malpezzi、Stefano V. Meille、Andrea Mele、Marinella Catellani
DOI:10.1039/b002581j
日期:——
A general photochemical synthesis of large thiohelicenes
containing nine and eleven rings is discussed along with the organisation
of racemic thiohelicenes in crystals: heterochiral assembling is dominant
except in the nine-ring system where interactions involving terminal ring S
atoms favour the segregation of close-packed homochiral molecules in
planes.