Examples of 'silyl groups' in a sentence
Meaning of "silyl groups"
silyl groups: in chemistry, silyl groups are organic compounds containing a silicon atom attached to organic substituents. These groups are commonly used in organic synthesis and as protective agents in organic reactions
How to use "silyl groups" in a sentence
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silyl groups
The silyl groups are converted to phenolic groups.
Selective deprotection of silyl groups is possible in many instances.
Polydimethylsiloxane chains are examples of silyl groups.
The analogous silyl groups may also be employed.
Adhesive compositions based on polymer having terminal silyl groups are well known.
Silyl groups such as trimethylsilylethyl may conveniently be removed using fluoride ions.
Resin systems utilizing alkoxy silyl groups have been particularly successful.
Remaining silyl groups were removed by treatment with methanol prior to isolation and purification.
Polymer systems that possess reactive silyl groups are therefore known in principle.
Silyl groups of this type can therefore be used when a particularly rapid cure is desired.
Amino grups may also contain organic silyl groups as protecting groups.
The polyalkyl siloxane of the invention preferably is a polydimethyl siloxane with terminal trimethyl silyl groups.
The cycloolefin polymer component is functionalized with silyl groups containing hydrolyzable moieties.
Silyl groups can not be used with DAST because DAST removes these groups.
Such groups are well known and include silyl groups for example the trimethylsilyl group.
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Preferred silyl groups are the trialkylsilyl groups, like triethylsilyl.
The trimethylsilyl group in this procedure may be replaced by alternative silyl groups e . g.
Particularly suitable protecting groups are silyl groups since these are readily removed under mild conditions.
The 5-fluorocytosine compound can be optionally protected with trisubstituted silyl groups.
Among those protective groups, silyl groups are particularly preferred.
Preferred bis-silanes include those having two trisubstituted silyl groups.
Particular examples of such silyl groups are trimethylsilyl and t-butyldimethylsilyl.
Silyl groups such as trimethylsilylethyl or t-butyldimethylsilyl may conveniently be removed using fluoride ions.
Preferred examples may include alkyl groups, aralkyl groups, and substituted silyl groups.
Alkylcarbonyl groups, silyl groups or aralkyl groups are more preferable.
The method according to claim 1 wherein the acyloxy silane comprises two silyl groups.
Bulky, nonpolar silyl groups are often used for this purpose.
Preferred silanes include bis-silyl silanes such as those having two trisubstituted silyl groups.
In such procedures, the silyl groups are removed in situ under the coupling reaction conditions.
Moisture-curing hot melts containing both isocyanate and silyl groups have also been disclosed.
The silyl groups were then removed using Method S, step b.
In one non-limiting embodiment, the silane comprises at least two silyl groups per molecule.
Silyl groups may be removed, for example, by fluoride or by aqueous acid.
Suitable hydroxy protecting groups include acetyl and silyl groups such as the tert-butyl dimethylsilyl group.
Compounds as claimed in any of the preceding claims wherein R ³ and R ⁴ represent etherifying silyl groups.
Particular silyl groups include trialkylsilyl groups, such as trimethylsilyl and ( t-butyl ) dimethylsilyl.
Preferred protecting groups include t-butyl, cumyl, and substituted silyl groups.
Preferred silyl groups are the trialkylsilyl groups, like, trimethylsilyl, triethylsilyl and tertiary butyl-dimethylsilyl.
Suitable protecting groups include, but are not limited to, lower alkyl, benzyls, and silyl groups.
Fluoride-based deprotections deprotect electron-poor silyl groups faster than electron-rich silyl groups.
R can be selected from the group consisting of alkyl, aryl, aralkyl, boryl and silyl groups.
Examples of suitable silyl groups include trimethylsilyl, triethylsilyl, t-butyldimethylsilyl, t-butyldiphenylsilyl, triisopropylsilyl, and the like.
Non-limiting examples of cyclic bridging groups include cyclo-tri or tetra-alkylene silyl groups.
Specific examples of such tri-substituted silyl groups are trimethylsilyl, tert-butyldimethylsilyl, tert-butyldiphenylsilyl, triphenylsilyl, etc.
Suitable Pg1 groups include aralkyl, aralkenly and silyl groups.
Substituents may include hydroxy, alkoxy, ether, ester, amino, thioether, keto, silyl groups or heterocyclic rings.
Illustrative suitable protecting groups include benzyl, O-t-butyl and silyl groups.
Compounds as claimed in any one of claims 1 to 6 wherein R4 and R5 represent etherifying silyl groups.
Preferred O-protecting groups in R14 are the aroyl groups, the acyl groups and the silyl groups.
Compounds as claimed in claim 7 in which R4 and R5 represent etherifying silyl groups.
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Examples of using Silyl
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The silyl compound hydrolysed very quickly
One type may be a silyl ester copolymer
Silyl ethers and chlorides are moisture curing
Examples of using Groups
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The most significant groups are the following
The groups meet three times a year
