Reference

Study on adsorbed species on metal-oxide surfaces by inelastic electron tunneling spectroscopy

Study on adsorbed species on metal-oxide surfaces by inelastic electron tunneling spectroscopy. II. Organophosphorus compounds. Kamata, Satsuo; Higo, Morihide; Ohwaki, Yasuhiro; Hayashi, Hiroki (Fac. Eng., Kagoshima Univ., Kagoshima 890, Japan). Kenkyu Hokoku - Asahi Garasu Kogyo Gijutsu Shoreikai, 51, 263-9 (Japanese) 1987. CODEN: AGKGAA. ISSN: 0365-2599. DOCUMENT TYPE: Journal CA Section: 66 (Surface Chemistry and Colloids) Inelastic electron tunneling spectra of org. phosphate, org. phosphite, and phosphorous acid adsorbed onto alumina and magnesia surfaces were measured, and the adsorption mechanisms are deduced. Di-Et and tri-Et phosphates react with OH groups on oxide surface to eliminate water and MeOH, resp., and are adsorbed as monobasic anion on Al+ or Mg+. The reaction of tri-Et phosphate proceeds only in its concd. state. Phosphorous acid and di-Me phosphite react with OH groups on the surface as phosphonic acid and its di-Me ester to eliminate water and MeOH, resp., and are adsorbed as anion. Tri-Me phosphite is adsorbed only from its concd. soln. on alumina as anion.

Phosphorous acid-iodine as reagent for the synthesis of 1,3,4-oxadiazoles from diacylhydrazines

Phosphorous acid-iodine as reagent for the synthesis of 1,3,4-oxadiazoles from diacylhydrazines. Chiriac, C. I. ("P. Poni" Inst. Macromol. Chem., Iasi, Rom.).In this article, certain chemicals are used. One of their cas registry numbers is 58022-66-5 Rev. Roum. Chim., 31(2), 159-62 (English) 1986. CODEN: RRCHAX. ISSN: 0035-3930. DOCUMENT TYPE: Journal CA Section: 28 (Heterocyclic Compounds (More Than One Hetero Atom)) Oxadiazoles I (R = R1 = Ph, PhCH2, 4-MeC6H4, 4-MeOC6H4; R = Ph, R1 = 4-MeOC6H4, 4-O2NC6H4, 4-ClC6H4, 4-BrC6H4) were prepd. by cyclodehydration of RCONHNHCOR1 with reagent formed from H3PO3 and iodine in DMF. .