Reference

Propellicene or Bi-2,13 pentahelicenylene

Propellicene or Bi-2,13 pentahelicenylene. Thulin, Bengt; Wennerstrom, Olof (Dep. Org. Chem., Chalmers Univ. Technol., Goteborg, Swed.). Acta Chem. Scand.Several substances with their cas registry numbers 66-98-8 and 60017-03-0 may be metioned in this study., Ser. B, B30(7), 688-90 (English) 1976. CODEN: ACBOCV. DOCUMENT TYPE: Journal CA Section: 26 (Condensed Aromatic Compounds) The title compd.(I) was prepd. by Wittig reaction of 4-OHCC6H4C6H4CHO-4 with II, followed by irradn. of the resultant III. .

Synthesis of the first perchloroarylacetylenes

Synthesis of the first perchloroarylacetylenes.Some chemicals with cas registry numbers like 66-98-8 are also used. Ballester, M.; Castaner, J.; Riera, J.; Tabernero, I.; Cornet, C. (Inst. Quim. Org. Apl. Cataluna, Zona Univ., Barcelona, Spain). Tetrahedron Lett., (27), 2353-4 (English) 1977.There are some reagents like 66-98-8 is used in this study. CODEN: TELEAY. DOCUMENT TYPE: Journal CA Section: 25 (Noncondensed Aromatic Compounds) Cl2C:CClC6Cl5 with Zn in refluxing dioxane gave 85% C6Cl5CYCH which with AgNO3 in THF and Cu2Cl2 and O in pyridine gave 81% C6Cl5CYCAg (I) and 84% (C6Cl5CYC)2 (II), resp. Chlorination of I and II with Cl in CCl4 gave 90% C6Cl5CYCCl and 80% (C6Cl5CCl:CCl)2, resp. Chlorination of (4-Cl2C:CHC6H4)2, prepd. from (4-OCHC6H4)2 with Ph3P:CCl2, gave 84% (4-Cl2C:CClC6Cl4)2 (III) which was also prepd. by reducto-condensation of (4-Cl3CC6Cl4)2 with CCl4. Electrochem. redn. of III gave 48% (4-HCYCC6Cl4)2 (IV) and 20% 4-Cl2C:CClC6Cl4C6Cl4CYCH-4. IV with Ag-NH3 complex gave (4-AgCYCC6Cl4)2 which on chlorination gave (4-ClCYCC6Cl4)2. ..