Title

Synthesis And Evaluation Of New Base Stock Fluids For Gas Turbine Application

Date

1962

Index Abstract

Contrails and DTIC condensed/truncated

Photo Quality

Not Needed

Report Number

WADD TR 60-838 Part II

Creator

Kan, Peter T.

Naqvi, Saiyid M.

Jorgensen, Marcia A.

Gibson, Patricia A.

Behun, John D.

Corporate Author

Wyandotte Chemicals Corporation

Laboratory

Directorate of Materials and Processes

Extent

249

Identifier

AD0274768

AD0274768

Access Rights

ASTIA

Distribution Classification

1

Contract

AF 33(616)-6749

DoD Project

3044

DoD Task

73314

DTIC Record Exists

Yes

Distribution Change Authority Correspondence

AFML LTR

Abstract

Progress is reported on the synthesis and evaluation of new pyrazine derivatives for high temperature stable fluid applications. A variety of candidate products which were unsymmetrical 2,3-disubstituted- and 2,3,6-trisubstitutedpyrazines were prepared from the versatile starting compounds 2-chloro-3-methylpyrazine and 2-chloro-3,6dimethylpyrazine. The substituents placed at the 2-position by nucleophilic displacement of the chlorine atom were various phenoxy, alkoxy, anilino and alkylamino radicals. Metalation of the methyl sites afforded the introduction of a number of other types of groups by arylation, aralkylation, alkylation, acylation and silylation reactions. A number of 2,6-disubstitutedpyrazines were prepared via oxidative demethylation of the corresponding intermediate 2,6-disubstituted-3-methylpyrazines. Some simple alkyl substituted pyrazines were also synthesized from the readily available starting compounds methylpyrazine, 2,5- and 2,6-dimethylpyrazines, and tetramethylpyrazine. Thus, a wide variety of pyrazine derivatives were obtained in good to excellent yields by the different synthetic routes.

The screening of pyrazine compounds prepared in this program for thermal and oxidative stability was continued. Based on these tests, classes of compounds containing undesirable linkages were bypassed and materials which showed promise were further screened under more severe conditions at higher temperatures. Correlations of the effect of variation in structure upon physical properties of the substituted pyrazines were made, based on the results of the more drastic screening. These correlations were utilized to guide the direction of the synthesis effort. As a consequence, a stepwise achievement of candidate products with further improved properties was realized.

Report Availability

Full text available

Date Issued

1962-02

Subject

Gas Turbines

Lubricants

Oxygen Heterocyclic Compounds

Alkoxy Radicals

Alkyl Radicals

Amides

Anilines

Chemical Reactions

Displacement Reactions

Infrared Spectroscopy

Lubrication

Oxidation

Phenyl Radicals

Stability

Substitution Reactions

Synthesis

Temperature

Viscosity

Publisher

Wright-Patterson Air Force Base, OH : Directorate of Materials and Processes, Aeronautical Systems Division, Air Force Systems Command

Distribution Conflict

No

Provenance

Lockheed Martin Missiles & Fire Control

Type

report

Format

1 online resource