Lithium 5-(2-diphenylphosphinoethyl)-1,2,3,4-tetramethylcyclopentadienide: Regioselectivity of alkylation of the tetramethylcyclopentadienide anion
Publication type: Journal Article
Publication date: 1998-05-01
scimago Q3
SJR: 0.305
CiteScore: 2.8
Impact factor: —
ISSN: 10665285, 15739171
General Chemistry
Abstract
Treatment of a mixture of isomeric (2-chloroethyl)-1,2,3,4-tetramethylcyclopentadienes with lithium diphenylphosphide leads to novel 4,5,6,7-tetramethylspiro[2,4]hepta-4,6-diene among the reaction products. The reaction of spiroheptadiene obtained with excess LiPPh2 at elevated temperature affords lithium 5-(2-diphenylphosphinoethyl)-1,2,3,4-tetramethylcyclopentadienide in almost quantitative yield. the regioselectivity of alkylation of the tetramethylcyclopentadienide anion is estimated from quantum-chemical calculations performedab initio for C5Mc4H−. The full charges on the ring carbon atoms are determined within the framework of Bader's theory of atomic fragments in molecules.
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Krutko D. P. et al. Lithium 5-(2-diphenylphosphinoethyl)-1,2,3,4-tetramethylcyclopentadienide: Regioselectivity of alkylation of the tetramethylcyclopentadienide anion // Russian Chemical Bulletin. 1998. Vol. 47. No. 5. pp. 956-959.
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Krutko D. P., Borzov M. V., Veksler E. N., Myshakin E. M., Lemenovskii D. A. Lithium 5-(2-diphenylphosphinoethyl)-1,2,3,4-tetramethylcyclopentadienide: Regioselectivity of alkylation of the tetramethylcyclopentadienide anion // Russian Chemical Bulletin. 1998. Vol. 47. No. 5. pp. 956-959.
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TY - JOUR
DO - 10.1007/BF02498168
UR - http://link.springer.com/10.1007/BF02498168
TI - Lithium 5-(2-diphenylphosphinoethyl)-1,2,3,4-tetramethylcyclopentadienide: Regioselectivity of alkylation of the tetramethylcyclopentadienide anion
T2 - Russian Chemical Bulletin
AU - Krutko, D P
AU - Borzov, M V
AU - Veksler, E N
AU - Myshakin, E M
AU - Lemenovskii, D A
PY - 1998
DA - 1998/05/01
PB - Springer Nature
SP - 956-959
IS - 5
VL - 47
SN - 1066-5285
SN - 1573-9171
ER -
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@article{1998_Krutko,
author = {D P Krutko and M V Borzov and E N Veksler and E M Myshakin and D A Lemenovskii},
title = {Lithium 5-(2-diphenylphosphinoethyl)-1,2,3,4-tetramethylcyclopentadienide: Regioselectivity of alkylation of the tetramethylcyclopentadienide anion},
journal = {Russian Chemical Bulletin},
year = {1998},
volume = {47},
publisher = {Springer Nature},
month = {may},
url = {http://link.springer.com/10.1007/BF02498168},
number = {5},
pages = {956--959},
doi = {10.1007/BF02498168}
}
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Krutko, D. P., et al. “Lithium 5-(2-diphenylphosphinoethyl)-1,2,3,4-tetramethylcyclopentadienide: Regioselectivity of alkylation of the tetramethylcyclopentadienide anion.” Russian Chemical Bulletin, vol. 47, no. 5, May. 1998, pp. 956-959. http://link.springer.com/10.1007/BF02498168.