Low Cost Routes to Acetylenic Intermediates

reportActive / Technical Report | Accession Number: ADB045498 | Open PDF

Abstract:

A number of palladium catalyst systems were prepared and evaluated for their rate of displacement of bromine from bromobenzene by 2-methyl-3-butyn- 2-ol. Initial results showed no rate increase over state-of-the-art catalysts. A new approach to the synthesis of 4,4-di3-ethynylphenoxydiphenyl ATS was conceived and successfully carried out. The new method is eased upon reaction of 4,4-di3-bromophenoxydiphenyl sulfone, followed by replacement of the bromines by 2-methyl-3-butyn-3-ol and hydrolytic removal of acetone. This method should provide a substantial improvement in cost over the current method which requires the use of 3-hydroxyphenylacetylene.

Author(s):
Harrison, J. J. ; Selwitz, C. M.
Author Organization(s):
GULF RESEARCH AND DEVELOPMENT CO PITTSBURGH PA CHEMICALS AND MINERALS DIV
Descriptive Note:
Final rept. 1 Sep 1978-31 Aug 1979
Pagination:
0075

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFML-TR-79-4183
Contract/Grant Number(s):
F33615-78-C-5141
Task Number(s):
04
Project Number(s):
2419
Monitor Series:
TR-79-4183, AFML
 Subject Terms
Joint Capability Areas:
JCA_6.3.3_Spectrum Management; JCA_5_Command and Control; JCA_5.3_Planning; JCA_6_Net Centric; JCA_6.3_Net Management; JCA_1.2.5_Lessons Learned; JCA_1.4.2_Health Service Delivery; JCA_1.4_Force Support
Modernization Areas:
Fully Networked C3
Communities of Interest:
C4I
Descriptor(s):
*SYNTHESIS(CHEMISTRY), *CATALYSTS, *ACETYLENES, *PALLADIUM COMPOUNDS, METHODOLOGY, LOW COSTS, REACTION KINETICS, COMPARISON, RATES, CONSTANTS, REPLACEMENT, HYDROLYSIS, ANALYTICAL CHEMISTRY, BROMINE, HALOGENS, SUBSTITUTION REACTIONS, SULFONES
Field(s)/Group(s):
Organic Chemistry
Keyword(s):
PALLADIUM CATALYSTS, BROMOBENZENES, SULFOLANES, PE62102F, WUAFML24190409
Report Date:
1979 Dec 01