77180-48-4Relevant academic research and scientific papers
Synthesis and conformational studies of 9-methoxy- and 9-methyl- 2,11-dithia[3.3]metacyclophanes
Shimizu, Tomoe,Maeda, Takayuki,Hida, Katsuhiro,Yamato, Takehiko
scheme or table, p. 515 - 519 (2010/01/16)
A series of 9-methoxy- and 9-methyl-2,11-dithia[3.3]metacyclophanes are obtained by the coupling reaction of the corresponding 1,3-bis(bromomethyl) benzenes and bis(sulfanylmethyl)benzenes in ethanol under the high dilution conditions. The conformational
Synthesis of dibenzopyrenes and pyrenes via photolytic sulfur extrusion and intramolecular cross-coupling reactions of dithia[3.3] (1,3)naphthalenophanes and dithia[3.3]metacyclophanes
Ashram,Miller,Bridson,Georghiou
, p. 6476 - 6484 (2007/10/03)
The syntheses of several substituted dithia[3.3]metacyclophanes and dithia[3.3](1,3)naphthalenophanes are reported and their photolyses in triethyl or trimethyl phosphite are described. Under these conditions, the corresponding tetrahydrodibenzopyrenes and tetrahydropyrenes are produced in a one-pot procedure when the precursor dithianaphthalenophanes and dithiacyclophanes possess at least one intraannular methoxyl group. A mechanism with supporting evidence is proposed to account for these results. Structural determinations of the four isomeric 11,22-dimethoxy-2,13- dithia[3.3](1,3)naphthalenophanes by NMR and X-ray single-crystal diffraction studies are also described. The syntheses of the novel anti-transoid- and anti-cisoid-[2.2](1,3)naphthalenophanes are also described.
