Detail of "2378-02-1"

Reference

Trifluoromethyl hypochlorite and perfluoro-tert-butyl hypochlorite [2,2,2-trifluoro-1,1-bis(trifluoromethyl)ethyl hypochlorite]

Trifluoromethyl hypochlorite and perfluoro-tert-butyl hypochlorite [2,2,2-trifluoro-1,1-bis(trifluoromethyl)ethyl hypochlorite]. Haspel-Hentrich, Fritz; Shreeve, Jean'ne M. (Dep. Chem., Univ. Idaho, Moscow, ID 83843, USA). Inorg. Synth., 24, 58-62 (English) 1986. CODEN: INSYA3. ISSN: 0073-8077. DOCUMENT TYPE: Journal CA Section: 23 (Aliphatic Compounds) In the presence of CsF at -196 to +25° ClF condenses with OCF2 to give 99% CF3OCl, a pale yellow liq. at -137° and a colorless gas at +25°. It can be stored in stainless steel bottles. A 100% yield of (CF3)3COCl (I) is obtained by combining (CF3)3COH with ClF in a stainless steel pressure vessel at -196° and allowing the mixt. to warm to 0°. I is a pale yellow liq.There are some commonly used reagents with their cas registry numbers 2378-02-1 and 7790-89-8 in this article. at 25°. It should be stored at -78°. The prepn. of CF3OCl and I should be carried out with extreme care because of the hazardous properties of all reagents. .

Highly Active Trialkoxymolybdenum(VI) Alkylidyne Catalysts Synthesized by a Reductive Recycle Strategy

Zhang, Wei; Kraft, Stefan; Moore, Jeffrey S. (Roger Adams Laboratory, Departments of Chemistry and Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA). Journal of the American Chemical Society, 126(1), 329-335 (English) 2004 American Chemical Society. CODEN: JACSAT. ISSN: 0002-7863. DOCUMENT TYPE: Journal CA Section: 25 (Benzene, Its Derivatives, and Condensed Benzenoid Compounds) Section cross-reference(s): 22, 29 A systematic study of alkyne metathesis catalyzed by trialkoxymolybdenum(VI) alkylidyne complexes is reported, in which substrate functional groups, alkynyl substituents, and catalyst ligands are varied. The sterically hindered complex [3,5-Me2C6H3(Me3C)N]3MoYCEt (I) was prepd. conveniently through a previously communicated reductive recycle strategy. Alcoholysis of I with various phenols/alcs. provides a set of active catalysts for alkyne metathesis at room temp., among which the catalyst with p-nitrophenol as ligand shows the highest catalytic activity and is compatible with a variety of functional groups and solvents. 455-13-0 and 2378-02-1 are also in the experiment. A key finding that enabled the use of highly active molybdenum(VI) catalysts is replacement of the commonly used propynyl substituents on the starting alkyne substrates with butynyl groups. Under reduced pressure using 1,2,4-trichlorobenzene as an non-volatile solvent, the alkyne metathesis of butynyl substituted compds. proceeds well at 30 °C providing high yields (83%-97%) of dimers. Rationalization of the special role played by butynyl substrates is discussed. .