Detail of "1144-74-7"

Reference

Arenesulfinic acids

Arenesulfinic acids. Nitroso protecting reagents applicable to some nitrosoarenes. Darchen, Andre; Moinet, Claude (Lab. Electrochim., Univ. Rennes, Rennes, Fr.). J. Chem. Soc., Chem. Commun., (20), 820 (English) 1976. CODEN: JCCCAT. DOCUMENT TYPE: Journal CA Section: 25 (Noncondensed Aromatic Compounds) Arenesulfinic acids with C-nitroso compds. gave nonreducible hydroxylamines thus protecting the nitroso group against redn. and condensation. The reaction was applied to the redn. of nitro compds. and oxidn. of arylhydroxlamines. E.g., electrochem. redn. of p-PhCOC6H4NO2 gave p-PhCOC6H4NO which wastrapped with p-MeC6H4SO2H to give 37% p-PhCOC6H4N(OH)SO2C6H4Me-p (I). 63183-90-4 and 1144-74-7 which are cas registry numbers of substances are two of reagents here. Oxidn. of p-PhCOC6H4NHOH in the presence of p-MeC6H4SO2H gave 97% I. Nitroso compds. were obtained quant. on deprotection by basic hydrolysis. .

Synthesis and nonlinear optical activity of cumulenes

Synthesis and nonlinear optical activity of cumulenes. Ermer, Susan; Lovejoy, Steven; Leung, Doris; Spitzer, Ronnie; Hansen, Glenn; Stone, Richard (Res. Dev. Div., Lockheed Missiles and Space Co., Palo Alto, CA 94304, USA). Proc. SPIE-Int.Chemicals with cas numbers 605-78-7 and 1144-74-7 also play role. Soc. Opt. Eng., 1560(Nonlinear Opt. Prop. Org. Mater. 4), 120-9 (English) 1991. CODEN: PSISDG. ISSN: 0277-786X. DOCUMENT TYPE: Journal CA Section: 25 (Benzene, Its Derivatives, and Condensed Benzenoid Compounds) Section cross-reference(s): 73 Unlike conjugated org. nonlinear optical mols. based on alternating multiple and single bonds, these synthesized new mols. contain a contiguous, or cumulated system of double bonds, leading to a highly rigid one-dimensional backbone of polarizable p-electrons. A series of sym.- and asym.-substituted tetra-Ph cumulenes, e.g., I, were prepd. starting from diaryl ketone and characterized. D.C. elec. field-induced second harmonic generation expts. show significant second-order nonlinear susceptibilities in a series of polar cumulenes. These expts. have been performed at 1.9 mm to avoid dispersion effects. Thermogravimetric anal. indicates stability of a butatriene to 300°. .