The alkylation of benzene with (S)-methyl 2-[(chlorosulfonyl)oxy]- or 2-(mesyloxy)propionate, in the presence of aluminum chloride, affords (S)-methyl 2-phenylpropionate in good chemical (50-80%) and excellent optical yield (≥97% as determined by rotation), with inversion of configuration...
which is an important electrophile for us to consider. The rate of this step – and therefore, the rate of the overall reaction – depends on the activation energy for the process where the carbocation forms. According to Hammond’s postulate (section 5.5.), the more...
31. The process of claim 5, wherein the aliphatic ketone is a compound of Formula VI: wherein R11 and R12 are each independently, hydrocarbon C1-C20 and may be substituted at least once with a halide, hydroxyl, amine, amide, thiol, thioether, carboxylate, or a carbon structure of C1-...
6. The process of claim 1 wherein compound A comprises glycidyl methacrylate and/or glycidyl acrylate. 7. The process of claim 1 wherein compound B comprises acrylic acid and/or methacrylic acid. 8. The process of claim 6 wherein compound B comprises acrylic acid and/or methacrylic acid...
the basicity parameters of the mixture are higher than that of pure solvents in a region of smaller concentrations of water.These results, together with earlier reported results for THF and Et2O mixtures with MeOH are discussed in terms of breaking off the structure of the more structurized so...
Mesostructured Zr-SBA-16 (3D cubic arrangement, Im3m space group) with different Si/Zr ratio was successfully synthesized by using Pluronic F127 triblock copolymer and n -butanol as a structure directing agent. Successful incorporation of Zr 4+ ions was achieved without any pH adjustments up to ...
of 6.58 g was obtained. Sequentially,n-butanol (50 mL) was added and extracted three times. Then-butanol fraction was recovered by rotary evaporation to dryness under reduced pressure. A 3.29 gn-butanol fraction was obtained. Finally, the extract was dissolved in HPLC-grade methanol for HPLC-...