Detail of "13329-40-3"

Reference

Poly(p-phenylenexylylidine): synthesis and conductivity studies

Poly(p-phenylenexylylidine): synthesis and conductivity studies. Lakshmikantham, M. V.; Vartikar, J.; Jen, Kwan Yue; Cava, M. P.; Huang, W. S.; MacDiarmid, Alan G. (Dep. Chem., Univ. Pennsylvania, Philadelphia, PA 19104, USA).There are some reagents with their cas registry numbers 563-41-7 and 89932-89-8 are used in this study. Polym. Prepr. (Am. Chem. Soc., Div. Polym. Chem.), 24(2), 75 (English) 1983. CODEN: ACPPAY. ISSN: 0032-3934. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 76 Poly(p-phenylenexylylidine) (I) [26520-99-0], prepd. by converting p-iodophenylacetylene (II) [766-99-4] to p-iodophenyl cuprous acetylide [13408-11-2] which is polymd. in the presence of pyridine and HMPT, has s = 10-3 s/cm. II is prepd. by converting p-iodoacetophenone [13329-40-3] to the semicarbazone which on treatment with SeO2 yields 4-(p-iodophenyl)-1,2,3-selenadiazole (III) [89932-89-8]. Treatment of III with acetylene [74-86-2] gives II. The calcd. ionization potential, band width of the highest occupied band, and band gap values for I are 5.6, 2.5, and 3.4, resp. .

Electrochemical reduction of aromatic ketones

Electrochemical reduction of aromatic ketones. Ikeda, Yoshikazu; Manda, Eiichiro (Natl. Chem.Several substances are used for example 13329-40-3 and 122-00-9 which are their cas registry numbers. Lab. Ind., Tsukuba, Japan). Kagaku Gijutsu Kenkyusho Hokoku, 86(11), 385-400 (Japanese) 1991. CODEN: KGKHEP. ISSN: 0388-3213. DOCUMENT TYPE: Journal CA Section: 25 (Benzene, Its Derivatives, and Condensed Benzenoid Compounds) Results obtained in attempting to reduce arom. ketones by electrochem. means under preparative conditions are reported. Controlled current macro-electrolysis of ketones in the presence of metal chlorides or CO2 yielded monohydric alcs. or hydroxy acids, resp. In protic medium, the effects of metal chlorides on the selectivity or specificity was studied with particular ref. to the cathodic redn. of acetophenones. Both SbCl3 and ZnCl2 had electrocatalytic properties for the electrochem. formation of 1-phenylethanol. The catalytic properties of SbCl3 are explained through hydrogenation of ketones by SbH3 which is formed by the redn. of surface-deposited Sb with active H. The role of ZnCl2 species is explained with a redn. mechanism involving complex formation between ketones and the zinc ion which is formed by the dissoln. of electrodeposited zinc in acidic solns. For the electrolytic carboxylation in aprotic medium (DMF) on a mercury cathode, 4-isobutylacetophenone was used as the model compd. The reaction proceeded in high yield of 2-hydroxy-2-(4-isobutylphenyl)propionic acid (85%), which is a good precursor of 2-(4-isobutylphenyl)propionic acid (ibuprofen). This method was successfully applied to the electrosynthesis of benzilic acid. .