Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun organic chemistry, especially in combination The univalent radical derived from
acetic be replacing everyhydrogen atom with one offlourine
Etymologies
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Examples
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A solution of the mixed anhydride of lysergic acid and trifluoroacetic acid is prepared from 2.68 g. of d-lysergic acid and 4.4 g. of trifluoroacetic acid anhydride in 100 ml. of acetonitrile by the method of Example One.
L.S.D., R.I.P. 2006
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The reaction of the lysergic and the trifluoroacetic anhydride is a low temperature reaction, that is, it must be carried out at a temperature below about 0 degrees C.
L.S.D., R.I.P. 2006
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Dispersants suitable for the purpose of this invention are those which are liquids at the low temperatures employed for the reaction and are of such an inert nature that they will not react preferentially to the lysergic acid with trifluoroacetic anhydride.
L.S.D., R.I.P. 2006
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The mixed anhydride of lysergic and trifluoroacetic acids is relatively unstable, especially at room temperature and above, and must be stored at a low temperature.
L.S.D., R.I.P. 2006
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Two gallons of trifluoroacetic anhydride are required per mol. of lysergic acid for the rapid and complete conversion of the lysergic acid into the mixed anhydride.
L.S.D., R.I.P. 2006
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The mixed anhydride itself, since it contains a lysergic acid group, also can exist in the reaction mixture in large part as an ionic adduct with trifluoroacetic anhydride or trifluoroacetic acid.
L.S.D., R.I.P. 2006
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A solution of the mixed anhydride of lysergic acid and trifluoroacetic acid in 200 ml. of acetonitrile is obtained by reacting 5.36 g. d-lysergic acid and 8.82 g. trifluoroacetic anhydride in accordance with the procedure of example one.
L.S.D., R.I.P. 2006
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It appears that one molecule of the anhydride associates with or favors an ionic adduct with one molecule of the lysergic which contains a basic nitrogen atom and that it is the adduct which reacts with a second molecule of trifluoroacetic anhydride to form the mixed anhydride along with one molecule of trifluoroacetic acid.
L.S.D., R.I.P. 2006
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The mixture is maintained in a low temperature for about one to three hours to insure the completion of the formation of the mixed anhydride of lysergic and trifluoroacetic acids.
L.S.D., R.I.P. 2006
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By my invention I have provided a simple and convenient method of preparing lysergic acid amides, which comprises reacting lysergic acid with trifluoroacetic anhydride to produce a mixed anhydride of lysergic and trifluoroacetic acids, and when reacting the mixed anhydride with a nitrogenous base having at least one hydrogen linked to nitrogen.
L.S.D., R.I.P. 2006
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