Effect of the structure of amines on the rate constants of their reactionswith diphenylcarbonyl oxide

Authors
Nazarov, AM Khursan, SL Chainikova, EM Komissarov, VD
Citation
Am. Nazarov et al., Effect of the structure of amines on the rate constants of their reactionswith diphenylcarbonyl oxide, RUSS J PH C, 75(2), 2001, pp. 190-194
Citations number
24
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY
ISSN journal
00360244 → ACNP
Volume
75
Issue
2
Year of publication
2001
Pages
190 - 194
Database
ISI
SICI code
0036-0244(200102)75:2<190:EOTSOA>2.0.ZU;2-2
Abstract
Flash photolysis and fast-response spectrophotometry were used to measure: the rate, constants for the reactions of diphenylcarbonyl oxide Ph2COO with aliphatic and aromatic amines. The reactivity of the amines studied increa se in the following series: tertiary aromatic (k(7) similar to n x 10(4)), primary aromatic (k(7) similar to n x 10(5)). and primary and secondary ali phatic and alicyclic amines [k(7) similar to n x 10(6) l/(mol s)]. It was f ound that, for primary amines and piperidine, the logarithm of the rate con stant linearly depends on pK(a). The relation between the reactivity and th e structure of amines was discussed.