Isobutyl acetate Subject

Coatings and sealants for varied industrial applications are made by dissolving compounds of low-viscosity FKM elastomers, such as VITON C-10, VITON A-35, or FLUOREL 2145, in methyl ethyl ketone, ethyl acetate, methyl isobutyl ketone, amyl acetate, or other related ketones.47 Such products have typical useful storage life of 7 days at 24°C (75°F) and cure within 2 weeks.58 The subject of coatings and sealants based on fluoroelastomers is covered in more detail in Modern Fluoropoly-mers (Scheirs, J., Ed.), Chapter 23 (Ross Jr., E. W. and Hoover, G. S.), John Wiley Sons, New York (1997). 

Inter-Departmental Communication from R J. Coffey, DWR Supervising Hydraulic Engineer, to J. S. Gorlinski, Executive Officer Central Valley RWPCB, dated January 10, 1955, subject Waste discharge, Aerojet-General Plant, Nimbus, Sacramento County (Aut). Besides TCE and PCE, the letter mentions the unchlorinated solvents butyl and amyl acetate, methyl isobutyl ketone, and xylene. 

While enologists have been interested in the odorous constituents of grapes and wines for many years, Hennig and Villforth (1942) and Hennig (1943, 1950-1951) seem to have made the first systematic studies on the subject. They extracted wine with pentane and after hydrolysis identified the alcohols and acids. They reported the following aldehydes, ketones, and related compounds (formaldehyde, acetaldehyde, propion-aldehyde, cinnamaldehyde, vanillin, acetone, methyl ketone, acetyl-methylcarbinol, and acetal—caproaldehyde and higher members of the series, benzaldehyde, and furfural were not positively identified but probably also occur) alcohols (methyl, ethyl, isopropyl, isobutyl, isoamyl, and a-terpineol—n-propyl, n-heptyl, and sec-nonyl (2-nonanol)... 

N-Annulation of a,(3-enone with internal alkyne To a MeOH solution (0.2 mL) of 2-methyl-5-methylenenonan-4-one (33.7 mg, 0.20 mmol) and 4-octyne (44.1 mg, 0.40 mmol) were added [Cp RhCl2]2 (3.1 mg, 0.005 mmol) and Cu(OAc)2 H2O (79.9 mg, 0.40 mmol), NH4OAC (30.8 mg, 0.40 mmol), and the reaction mixture was stirred at 130°C under a nitrogen atmosphere for 6h. After cooling to room temperature, the solvent was removed in vacuo, and the resulting erude mixture was subject to flash column chromatography (n-hexane ethyl acetate = 90 1) to afford 3-butyl-2-isobutyl-5,6-dipropylpyridine (51.8 mg, 0.188 mmol) in 94% yield. 

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