Studien über ätherartige Verbindungen, XXIII. Mitteil.: Zur Verseifung der Trichloressigsäure‐ester

Abstract

Palomaa, Salmi, K o r t e :LJahrg. 72 rektifiziert wird. Der Siedepunkt des reinen Kohlenwasserstoffs liegt bei 124O/0.3 mm. Ausb. 1 g. 367 nig SbstDie Dehydrierung des Kohlenwasserstoffs mit Palladium bei 240O liefert 1 -M e t h y l -p h e n a n t h r e n , das nach Reinigung uber das Pikrat (Schmp. 135-136O) bei 119O schmilzt. Gemischt mit reinem 1-Methyl-phenanthren vom Schmp. 119-1200 (Pikrat, Schmp. 136O) tritt keine Schmelzpunkts-Depression auf.Der D e u t s c h e n F o r s c h u n g s g e m e i n s c h a f t danke ich fur die Unterstiitzung meiner Arbeiten.

Perfluoropolyether alkyl diesters: Structure effects of the alkyl group on the kinetics of the hydrolysis reactions

“…All data for the general base‐catalyzed hydrolysis of carboxylic esters, including NEH, are in accordance with the mechanism described in Scheme , which is a generalization of the accepted mechanism for the alkaline B AC 2 hydrolysis 22, 24–28. Contrarily, acidic hydrolysis proceeds through the formation of an intermediate complex [R 1 C(OH) (H 2 O)OR 2 ] + produced by the attack of a water molecule on the protonated form of the ester 1…”

Determination of hexachloroacetone in air

“…Palomaa, Salmi, and Korte have reported (6) that ethyl trichloroacetate is more stable to hydrolysis than methyl trichloroacetate. The efficacies of ethanol and methanol in absorbing HCA from air were therefore compared (Table II).…”

Neutral hydrolysis of p-nitrophenyl dichloroacetate in highly aqueous tert-butyl alcohol. Effects due to solvent structural integrity

“…(CO)5Cr=C(OCH3)CH3 (1) THF 2062 (m), 1980 (s), 1941 (vs) [(CO)6CrC(OCH3)CH2]-[(Ph3P)2N]+ (3) THF 2030 (w), 1937 (w), 1898 (vs), 1849 (s) [(CO)5CrC(OCH3)CH2]-Li+ THF 2030 (w), 1937 (w), 1898 (vs), 1848 " E. W. Abel, I. S. Butler, and J. H. Reid, J. Chem. Soc., 2068 (1963).…”