Bis(cyclopentadienyl)-chromium(ii) which has been adsorbed on an inorganic oxide carrier with lithium alkyl or aryl, or a hydride of a metal of main groups i to iii of the periodic table of elementsdoi:US6197901 B1in which the cyclopentadienyl rings may carry inert organic radicals, said ...
amethyl group(n=1, CH3) is a fragment of a methane molecule (CH4).Alkylating agentsuse selectivealkylationby adding the desired aliphatic carbon chain to the previously chosen starting molecule. This is one of many known chemical syntheses. Alkyl groups can also be removed in a process known ...
Arylalkyl ITCs also cause induction of apoptosis of pre-neoplastic and neoplastic cells [15], [16], [17], [18]. Interactions with thiols, such as GSH and cysteine residues of proteins, have been studied with ITC compounds, and it has been shown that ITCs reduce intracellular GSH levels, ...
(18-31) including some potentially sensitive functional groups and useful synthetic handles, such as ketone (22), acetal (27), tertiary amine (30), chloride (20), nitrile (23), alkenes (25and26), phosphate (28), sulfone (29) and boronic ester (31), which can provide a good chance ...
•Aryl:Xisbondedtosp 2 carbononbenzenering. Examples: C H H H C H H Br alkylhalide CC H H H Cl vinylhalide I arylhalide PolarityandReactivity •HalogensaremoreelectronegativethanC. •Carbon-halogenbondispolar,socarbonhas partialpositivecharge. ...
The term “hydroxyalkyl” refers to straight or branched saturated hydrocarbon chains containing 1-5 carbon atoms which are substituted at least one of the carbon with the hydroxyl group. The term “-alkylaryl” refers to aryl groups connected to an adjacent C1-C6alkyl wherein the linkage is ...
When the term “carbocycle” is used, it is intended to include “aryl”. A bridged ring occurs when one or more, preferably one to three, carbon atoms link two non-adjacent carbon atoms. Preferred bridges are one or two carbon atoms. It is noted that a bridge always converts a ...
organic magnesium compound) with a compound of the formula; (R2N)2B-X [X is a halogen; R is H, a (substituted) 1-10C alkyl, aryl, alkenyl or the like] and bringing the resulting compound into contact with a nitrogen compound having at least one of NH2 groups.;COPYRIGHT: (C)1994,...
Alkyl benzenes having at least 3 alkyl groups are produced by condensing an aromatic hydrocarbon feed having at least 2 alkyl groups per molecule and having at least one unsubstituted nuclear hydrogen atom per molecule with formaldehyde to form a di-arylmethane, subjecting the diarylmethane to ...
in which X is oxygen or sulphur, at least one X being sulphur, R and R1 are the same or different and are alkyl radicals having 2-20 carbon atoms, aryl, aralkyl or cycloalkyl radicals and M is a metal ion of valency n from Groups I or II of the Periodic Table or chromium, manga...