Activating water: important effects of non-leaving groups on the hydrolysis of phosphate triesters.
Activating water: important effects of non-leaving groups on the hydrolysis of phosphate triesters.
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活化水:非离去基团对磷酸三酯水解的重要影响。
DOI:
10.1002/chem.201101926
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
Kirby AJ
中科院分区:
文献类型:
--
作者:
Kirby AJ
The high rate of spontaneous hydrolysis of tris‐2‐pyridyl phosphate (TPP) is explained by the activating effects of the non‐leaving (“spectator”) groups on POAr cleavage, and not by intramolecular catalysis. Previous work on phosphate‐transfer reactions has concentrated on the contributions to reactivity of the nucleophile and the leaving group, but our results make clear that the effects of the non‐leaving groups on phosphorus can be equally significant. Rate measurements for three series of phosphate triesters showed that sensitivities to the non‐leaving groups are substantial for spontaneous hydrolysis reactions, although significantly smaller for reactions with good nucleophiles. There are clear differences between triaryl and dialkyl aryl triesters in sensitivities to leaving and non‐leaving groups with the more reactive triaryl systems showing lower values for bothβLGandβNLG. Intramolecular catalysis of the hydrolysis of TPP by the neighbouring pyridine nitrogens is insignificant, primarily because of their low basicity.
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DOI:
10.1039/j29700001165
发表时间:
1970-01-01
期刊:
JOURNAL OF THE CHEMICAL SOCIETY B-PHYSICAL ORGANIC
影响因子:
--
作者:
KIRBY, AJ;YOUNAS, M
通讯作者:
YOUNAS, M
DOI:
10.1039/a707095k
发表时间:
1998-03-01
期刊:
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2
影响因子:
--
作者:
Kosonen, M;Hakala, K;Lonnberg, H
通讯作者:
Lonnberg, H
影响因子:
3.2
作者:
Lönnberg, H;Strömberg, R;Williams, A
通讯作者:
Williams, A
DOI:
--
发表时间:
1974
期刊:
影响因子:
--
作者:
E. P. Lyznicki;K. Oyama;T. Tidwell
通讯作者:
T. Tidwell
DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
R. Hay;N. Govan
通讯作者:
N. Govan