What is the significance of the ether linkage in organic chemistry? The ether linkage is a functional group that imparts unique chemical properties to ethers, such as their ability to act as solvents. 4 What is a polyester, and how is it related to esters? Polyester is a type of polymer...
Interestingly, in imidazoline 1c (bearing an isopropyl group at the stereogenic center) reaction with benzaldehyde, the corresponding silyl ether 2c was obtained in higher yield (80%) and greater diastereomeric excess (de 95%) than other products. Using alkyl aldehyde for the reaction, the ...
Chemistry and Physics of LipidsGuler, S. D., D. D. Ghosh, J. Pan, J. C. Mathai, M. L. Zeidel, et al. 2009. Effects of ether vs. ester linkage on lipid bilayer structure and water permeability. Chem. Phys. Lipids. 160:33-44....
Lipids were extracted using a modified methyl tert-butyl ether (MTBE, HPLC grade; Fischer Scientific, Massachusetts, USA) method as described previously50,51. Brain tissue (10 mg) was homogenized using a bead homogenizer (FastPrep-24, MP Bio, Sydney, Australia) at 6 m/s for 40 s, using...
bisphenols: a typical procedure To an orange solution of Pd2(dba)3ÁCHCl3 (in which dba is dibenzylideneace- tone; 0.026 g, 0.025 mmol) and 1,1¢-bis(diphenylphosphino)ferrocene (DPPF; 0.056 g, 0.1 mmol) in THF (2 ml) was added 4,4¢-dihydroxydiphenyl ether (2a; 0.182 g, 0.9...
Stereolithography systems for conventional manufacturing applications have, as mentioned in an earlier section of this chapter, primarily used reactive acrylate/methacrylate, epoxide, or vinyl ether-based resins, or some hybrid composition thereof [5]. As stereolithographic fabrication technology expands to...
A series of multiblock poly(ether-ester-amide)s (PEEA) based on polyamide-6 (PA6) and poly(ethylene glycol) (PEG) is synthesized in a two-step process. The... S Fakirov,K Goranov,E Bosvelieva,... - 《Macromolecular Chemistry & Physics》 被引量: 60发表: 1992年 ...
The corresponding enamine165 or enol ether166 are now rarely used. The extensive chemistry of β-alkylthio-α,β-unsaturated enones has been reviewed.167 Some examples of its use as a blocking group are described;168 a recent and testing example of its blocking function is given in Scheme 64...
By substituted hydrocarbyl is meant hydrocarbyl containing one or more substituents (functional groups) which do not interfere with (as appropriate) amidation, transesterification and crosslinking. Useful substituents include oxo (keto), halo, ether and thioether. Unless otherwise specified it is prefe...
The naming of esters can be confusing to students who are new toorganic chemistrybecause the name is the opposite of the order in which the formula is written. In the case of ethyl ethanoate, for example, the ethyl group is listed before the name. "Ethanoate" comes from ethanoic acid. Wh...