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Acidimetry and alkalimetry by the use of symmetrical diphenyl guanidine

โœ Scribed by Chakmakjian, H. H.


Book ID
127024759
Publisher
American Chemical Society
Year
1931
Tongue
English
Weight
844 KB
Volume
8
Category
Article
ISSN
0021-9584

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Direct polycondensations of hydroxybenzo
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## Abstract Direct polycondensation reaction of hydroxybenzoic acids with diphenyl chlorophosphate (DPCP) in pyridine was largely improved by carrying out the reaction in the presence of a formamide. Among the formamides examined, __N__,__N__โ€dimethylformamide (DMF), __N__,__N__โ€dimethylformamide,