Accession Number:

ADA025894

Title:

Attempted Synthesis of Pyridine Containing Bis-Alpha-Diketones via the Benzoin Condensation

Descriptive Note:

Final rept.

Corporate Author:

ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MA

Report Date:

1976-04-01

Pagination or Media Count:

18.0

Abstract:

Although polyphenylquinoxalines are exceptional high-temperature- resistant resins, they are prohibitively expensive due largely to the high cost of the Bis-alpha-diketones from which they are prepared. The benzoin condensation of each of the three isomeric pyridine monocarboxaldehydes with terephthaldehyde followed by oxidation has been investigated as an alternate route to these monomers. Although all such attempts were unsuccessful, an insight into the complexities of mixed benzoin condensations is presented.

Subject Categories:

  • Organic Chemistry
  • Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE