Reference

Transition metal substituted diphosphenes

Transition metal substituted diphosphenes. XXIV.Several substances are used for example 131041-18-4 and 10465-81-3 which are their cas registry numbers. Cheletropic [1+4] cycloaddition of azodicarboxylic esters and amides to the metal substituted diphosphene (h5-C5Me5)(CO)2FePYPMes* (Mes* = 2,4,6-tert-Bu3C6H2). Structure of [cyclic] (h5-C5Me5)(CO)2Fe-P(:P-Mes*)[N(CO2Et)N:C(OEt)O]. Weber, Lothar; Bastian, Holger; Mueller, Achim; Boegge, Hartmut (Fak. Chem., Univ. Bielefeld, Bielefeld D-W-4800/1, Germany). Z. Naturforsch., B: Chem. Sci., 47(2), 231-7 (German) 1992. CODEN: ZNBSEN. ISSN: 0932-0776. DOCUMENT TYPE: Journal CA Section: 29 (Organometallic and Organometalloidal Compounds) Section cross-reference(s): 75 The diphosphenyl complex (h5-C5Me5)(CO)2FeP:PMes* reacts with equimolar amts. of the azo compds. RC(O)N:NC(O)R (R = OEt, O-tBu, OCH2C6H5, NC5H10) in a cheletropic [1 + 4] cycloaddn. to afford stereoselectivity the metal substituted oxadiazaphospholenes I. The products have been characterized by elemental anal. as well as by spectroscopic data (IR, 1H, 13C, 31P NMR, MS). The mol. structure of I (R = OEt) has been elucidated by single crystal x-ray anal. .

Method of treating humans and animals infected with viruses of the retrovirus group

Method of treating humans and animals infected with viruses of the retrovirus group. Vandevelde, Michel; Margery, Helene (Previsan S.A., Luxembourg). U.S. US 5585367 A 17 Dec 1996, 15 pp., Cont.-in-part of U.S. 5,399,555. (English). (United States of America).In this article, certain chemicals are used. Some of their cas registry numbers are 123-77-3 and 10465-81-3 CODEN: USXXAM. CLASS: ICM: A61K031-655. NCL: 514150000. APPLICATION: US 1995-406143 20 Mar 1995. PRIORITY: BE 1990-435 19 Apr 1990; US 1990-568868 17 Aug 1990; US 1992-947090 17 Sep 1992. DOCUMENT TYPE: Patent CA Section: 63 (Pharmaceuticals) Compns. useful in methods of treating humans and animals infected with viruses of the retrovirus group, contain azoic compds. of the general formula NR1R2C(:X1)N:NC(:X2)NR3R4, wherein R1, R2, R3, and R4 are identical or different and each represents H, C1-6-hydrocarbyl; R1 and R2 may be bonded together to form a heterocyclic ring with their adjacent nitrogen atom, and R3 and R4 may be bonded together to form a heterocyclic ring with their adjacent nitrogen atom; X1 and X2 are identical or different and each represents an oxygen atom or an NR5, wherein R5 is H, C1-6-hydrocarbyl, or nitro group. The preferred active ingredients are 1,1'-azobisformamide and 1,1'-(azodicarbonyl)dipiperidine. Various compns. contg. the compds. are provided. .