Examples of 'methylene groups' in a sentence
Meaning of "methylene groups"
methylene groups: In chemistry, methylene groups refer to a functional group consisting of a carbon atom bound to two hydrogen atoms. They are commonly found in organic compounds and play a role in various chemical reactions and molecular structures
How to use "methylene groups" in a sentence
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methylene groups
Six is a preferred number of methylene groups.
Activated methylene groups have a methylene group between two strong electron withdrawing groups.
In preferred embodiments there are two such methylene groups.
Diketones with two methylene groups separating the carbonyl groups typically coexist with their enol tautomers.
Other methods of reducing ketones to methylene groups are equally applicable.
Pioglitazone undergoes extensive hepatic metabolism by hydroxylation of aliphatic methylene groups.
Ornithine is lysine with one fewer methylene groups in the side chain.
Pioglitazone undergoes extensive hepatic metabolism by hydroxylation of alip atic methylene groups.
The reaction can be repeated to generate methylene groups adjacent to the carboxylic acid.
Preferred organic moieties include aromatic moieties and methylene groups.
In an embodiment Z is chosen from methylene groups and propylene groups.
The peak is a characteristic peak from a straight chain of four or more methylene groups.
Isopropylidene, mono - and diaryl methylene groups are identified as particularly suitable.
They were estimated as substances having three EGCG molecules crosslinked with two methylene groups.
In a preferred embodiment Z is chosen from methylene groups and propylene groups.
See also
The porphyrins are a class of heterocyclic compounds containing 4 pyrrole rings united by methylene groups.
R1 may be bicyclic, such that two methylene groups therein are bridged to form a bicycloalkane.
Preferably, the anhydride ring incorporates from two to four methylene or substituted methylene groups.
Non-adjacent methylene groups in the alicyclic rings can be substituted by oxygen or sulfur atoms.
In general, the crystallinity is observed when about twelve methylene groups are linearly linked.
Compounds having activated methylene groups wherein the compounds are selected from the group consisting of,.
For the reasons indicated above, alkylene oxides having more methylene groups are hydrophobic.
The peaks of two methylene groups are overlapping with that of H2O peak.
The Riley oxidation is a selenium dioxide-mediated oxidation of methylene groups adjacent to carbonyls.
Methylene groups of the peptide sidechains can be extended to homologous C2-C4 alkylenes.
A compound of Claim 1 in which two methylene groups are replaced by oxygen.
It is further possible that moiety X comprises other atomic groups, such as methylene groups.
A compound of Claim 1 in which two methylene groups are replaced by sulfur.
Even more preferred all groups A are the same, and most preferred all A denote methylene groups.
Methylene groups of the peptide side chains can be extended to homologous C2-C4 alkylenes.
In a particularly preferred embodiment, the linking groups I and B are both methylene groups.
Methylene groups of the protein side chains can be extended to homologous C2-C4 alkylenes.
Describes 2-nitroimidazole derivatives containing fluorine-substituted methylene groups.
Methylene groups of the polypeptide side chains can be extended to homologous C2-C4 alkylenes.
Likewise, the term " trihomo " refers to the addition of three methylene groups.
Both methylene groups still appeared as pairs of mutually-coupled doublet of doublets ( Figure 5 ).
An example of this cyclic amine group is a cyclic methylene ring of 4 to 18 methylene groups.
The 2-16 repeating methylene groups are preferably derived from a diol.
Such groups include, for example, hydroxyl groups, thiol groups, hydrazide groups, and activated methylene groups.
The number n of methylene groups forming the alkyl chain is in the range 2 to 24 ;.
An alkylidene group, such as substituted or unsubstituted methylene groups ═ CR 2.
For example, bridging methylene groups are present in the zirconium diphosphonate, MIL-57.
A compound of Claim 1 in which the heteroatoms are separated by from 2 to 5 methylene groups.
For example, bridging methylene groups have been seen in the zirconium diphosphonate, MIL-57.
The diamines may in particular be diamines in positions a and w, containing from 15 to 20 methylene groups.
We have introduced 5 ′ and 3 ′ aminolinkers with six and seven methylene groups as spacers, respectively.
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