Examples of 'starting compounds' in a sentence
Meaning of "starting compounds"
starting compounds ~ refers to the initial substances used in a chemical reaction or synthesis, which serves as the foundation for creating new compounds
How to use "starting compounds" in a sentence
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starting compounds
Starting compounds of formula XVa are commercially available.
The starting materials or starting compounds are generally known.
The starting compounds can be added in stoichiometric quantity.
Phenylhydrazines may be used as starting compounds.
The starting compounds are generally known.
The hydrochlorofluoroalkanes starting compounds are known.
The starting compounds and reagents are all commercially available.
Representative production methods of the starting compounds are shown as hereunder.
The starting compounds are commercially available or are prepared by known techniques.
Description of the starting compounds.
The following starting compounds can be prepared in similar manners.
The invention concerns also some of the starting compounds.
The e appropriate starting compounds have the formula.
These are in general widely available and easily accessible starting compounds.
All of the starting compounds of the present invention are novel.
See also
In the following the preparation of such starting compounds is illustrated in detail.
The starting compounds can be prepared by the following processes.
The processes for preparing the starting compounds are explained below.
These starting compounds are not presented as having any pharmacological properties.
The resulting compounds are useful starting compounds in the synthesis of corticosteroids.
The starting compounds can therefore be regarded as short or medium aldehydes.
The solvent is optionally selected depending on the kinds of starting compounds.
Preferred starting compounds are difunctional.
The solvent should be chosen depending on the kind of starting compounds.
At least one of the starting compounds contains unsaturated compounds.
Some antibiotics are currently made by chemical modifications of biologically produced starting compounds.
A part of the starting compounds according to the present invention is novel.
A pasty compound can be obtained by synthesis from starting compounds of vegetable origin.
Preparation processes of starting compounds used in the examples are described as references.
The following reference examples show the preparation of various starting compounds.
The preferred starting compounds are diethylene triamine and triethylene tetraamine.
Another advantage of the present invention is that the starting compounds are stable.
The starting compounds can be synthesized by the methods described as follows.
The syntheses are multistage processes in which relatively expensive starting compounds are used.
The starting compounds must contain at least two hydroxyl groups.
These optical isomers can be also produced by using optically active starting compounds.
The starting compounds are known or can be readily prepared by known methods.
The system is water soluble and does contain the counterions of the starting compounds.
The starting compounds and the base are generally introduced in stoichiometric quantity.
Such optical isomers can also be prepared by using optically active starting compounds.
Preparation of the starting compounds applied in our invention is demonstrated in the examples.
The reaction temperature may be appropriately chosen depending on the kind of starting compounds.
The individual starting compounds can be employed either in stoichiometric quantities or in excess.
The decoupling of both oxidation steps allows usage of starting compounds of poor quality.
The most preferred starting compounds are tetraethyl orthosilicate and tetraethyl orthotitanate.
The compounds described above can be prepared from commercially available starting compounds.
By treating the starting compounds with an aqueous alkaline or an aqueous acidic solution.
These isomers can be isolated by a conventional method or produced by using various starting compounds.
Starting compounds were eluted by column chromatography over silica gel with benzene.
The stoichiometric ratio of the starting compounds was comparable to that of the previous examples.
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