Search results
Results from the WOW.Com Content Network
The vinylsulfone group reacts with the nucleophilic functional groups of the fibers by Michael addition to form a covalent ether bond: Reaction of vinyl sulfone compounds with hydroxyl groups of cellulose (HO-CELL) An unfavorable side reaction in the dyeing process is the conversion of the vinylsulfone group to the 2-(hydroxy)ethylsulfonyl ...
A sulfone. It consists of a sulfonyl group bonded with two organic substituents. In organosulfur chemistry, a sulfonyl group is either a functional group found primarily in sulfones, or a substituent obtained from a sulfonic acid by the removal of the hydroxyl group, similarly to acyl groups. [1]: 1470–1476
a Group 1 is composed of hydrogen (H) and the alkali metals. Elements of the group have one s-electron in the outer electron shell. Hydrogen is not considered to be an alkali metal as it is not a metal, though it is more analogous to them than any other group. This makes the group somewhat exceptional.
Main page; Contents; Current events; Random article; About Wikipedia; Contact us
The −SH functional group itself is referred to as either a thiol group or a sulfhydryl group, or a sulfanyl group. Thiols are the sulfur analogue of alcohols (that is, sulfur takes the place of oxygen in the hydroxyl ( −OH ) group of an alcohol), and the word is a blend of " thio- " with "alcohol".
Molecular geometry influences several properties of a substance including its reactivity, polarity, phase of matter, color, magnetism and biological activity. [1] [2] [3] The angles between bonds that an atom forms depend only weakly on the rest of molecule, i.e. they can be understood as approximately local and hence transferable properties.
Relatively speaking this group is unreactive. Because of the rigidity of the functional group, sulfonamides are typically crystalline; for this reason, the formation of a sulfonamide is a classic method to convert an amine into a crystalline derivative which can be identified by its melting point. Many important drugs contain the sulfonamide group.
The first general method for preparation of sulfene as an intermediate, reported simultaneously in 1962 by Gilbert Stork [4] and by Günther Optiz, [5] involved the removal of hydrogen chloride from methanesulfonyl chloride using triethylamine in the presence of an enamine as trapping agent.