Examples of 'alkylidene' in a sentence
Meaning of "alkylidene"
alkylidene (noun): A chemical compound or group containing a carbon atom bonded to two alkyl groups
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- Any of a class of divalent functional groups derived from an alkane by removal of two hydrogen atoms from the same carbon atom, the free valencies being part of a double bond - R₂C=
How to use "alkylidene" in a sentence
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alkylidene
Tantalum alkylidene complexes are nucleophilic.
The present invention is furthermore related to novel alkylidene pyrazolidinedione derivatives.
Examples of the alkylidene include linear or branched groups.
The present disclosure recognizes the importance of improved methods to prepare tungsten oxo alkylidene complexes.
The alkylidene moiety may be substituted.
In this specification the alkyl and alkylidene groups may be branched or straight chain.
Alkylidene moieties may be in the form of straight or branched chains.
Isolating an alkylidene ruthenium complex.
Alkylidene carbenes are alluring in that they offer formation of cyclopentene moieties.
A is an alkylidene group.
Heptylidene, octylidene and nonylidene are the most preferred alkylidene groups of this class.
Straight chain lower alkylidene is advantageously methylidene or ethylidene.
The reaction proceeds vía alkene double bond cleavage, followed by a statistical redistribution of alkylidene fragments.
To generate an alkylidene carbene a ketone can be exposed to trimethylsilyl diazomethane.
Thus, a hydrocarbon diradical according to the present invention includes alkylene, alkenylene and alkylidene moieties.
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The alkylidene ruthenium catalysts used may be formed in situ or ex situ.
The present invention provides novel alkylidene glycerol surfactants useful in detergent compositions.
An alkylidene chain may be substituted in the same manner as an aliphatic group.
The source of the alkylidene A may be an alcohol.
The alkylidene and alkylene groups include branched and straight chain hydrocarbyl groups.
Preferably, the alkylidene is ethylidene.
A lower alkylidene group ( with double bond exocyclic to the ring ) represents preferably methylidene or ethylidene.
Each R ₂ is independently a divalent group such as an alkylene or an alkylidene group.
A considerable number of organometallic alkylidene catalysts is already known to homogeneously catalyze olefin metathesis.
In another preferred embodiment of the present invention, R " is a substituted or unsubstituted alkylidene.
Among the alkylidene radicals particular mention may be made of the allylene or vinylene radicals.
More preferably, R 2 is an aliphatic group and more preferably still an alkylidene group.
Suitable examples of the lower alkylidene group in the above substituents include methylene and ethylidene.
Abstract, This manuscript begins with a general description of the chemistry of alkylidene carbenes.
Previous studies have shown that alkylidene electronics have a relatively small influence on the initiation rate.
In some embodiments of dihydroxy-substituted aromatic hydrocarbons E may be an unsaturated alkylidene group.
Exemplary alkylidene radicals are methylidene, ethylidene and propylidene.
A fiber or filament according to claim 5 wherein said oxyalkylated alkylidene bisphenol is an oxyalkylated bisphenol A.
Suitable alkylidene catalysts have the general structure,.
Cyclizing a compound of formula IV with an alkylidene compound of formula V wherein,.
Exemplary of the alkylidene radicals is methylidene, ethylidene and propylidene.
In some cases, a ligand is alkylidene.
Exemplary of the alkylidene radicals are methylidene, ethylidene and propylidene.
And wherein aryl, heteroaryl, heterocyclyl, carbocyclyl and alkylidene chain groups are optionally substituted.
Examples of the alkylidene radicals are methylidene, ethylidene and propylidene.
A compound according to claim 1 or 2, wherein R " is a substituted or unsubstituted alkylidene.
Suitable alkylidene catalysts may have the following structure,.
Specific examples among these compounds are alkylidene bisphenols, for example bisphenol A.
Examples of the alkylidene group are ethylidene, propylidene, and isopropylidene groups.
Each R8 is independently a straight or branched alkylene or alkylidene chain ;.
Method of preparing an alkylidene ruthenium complex comprising the following steps,.
Wherein, among many other possibilities, R ' and R " may represent an optionally substituted alkylidene group.
Specific examples of the alkylidene groups are ethylidene, propylidene and isopropylidene groups.
Preferably R4 and R5 represent hydrogen, or together form an alkylidene group.
Examples of the alkylidene groups are an ethylidene group, a propylidene group and an isopropylidene group.
