Mayr's Database of Reactivity Parameters

Carbanions

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Name Solvent Reactivity
Parameters
Classification Reference
(title or year)
anion of 4-methylbenzyl trifluoromethyl sulfone (in DMSO)
C9H8F3O2S- *
DMSO

N  Param.: 19.35

sN Param.: 0.67
*** J. Am. Chem. Soc. 2007, 129, 9753-9761
10.1021/ja072135b
anion of 4-nitrobenzyl trifluoromethyl sulfone (in 91M9AN)
C8H5F3NO4S- *
MeOH-MeCN mix

N  Param.: 18.24

sN Param.: 0.66
*** J. Am. Chem. Soc. 2007, 129, 9753-9761
10.1021/ja072135b
anion of 4-nitrobenzyl trifluoromethyl sulfone (in DMSO)
C8H5F3NO4S- *
DMSO

N  Param.: 14.49

sN Param.: 0.86
*** J. Am. Chem. Soc. 2007, 129, 9753-9761
10.1021/ja072135b
anion of 4-nitrobenzyl-CN (in DMSO)
C8H5N2O2- *
DMSO

N  Param.: 19.67

sN Param.: 0.68
*** J. Org. Chem. 2009, 74, 75-81
10.1021/jo802241x
anion of 4-nitrobenzyl-CN (in MeCN)
C8H5N2O2 *
MeCN

N  Param.: 20.10

sN Param.: 0.71
*** J. Am. Chem. Soc. 2020, 142, 8383-8402
10.1021/jacs.0c01960
anion of 5-(p-anisyl) Meldrum's acid (in DMSO)
C13H13O5 *
DMSO

N  Param.: 12.35

sN Param.: 0.90
** Eur. J. Org. Chem. 2016, , 1841-1848
10.1002/ejoc.201600107
anion of 5-phenyl Meldrum's acid (in DMSO)
C12H11O4 *
DMSO

N  Param.: 11.54

sN Param.: 0.95
*** Eur. J. Org. Chem. 2016, , 1841-1848
10.1002/ejoc.201600107
anion of acetylacetone (in DMSO)
C5H7O2 *
DMSO

N  Param.: 17.64

sN Param.: 0.73
*** Angew. Chem. Int. Ed. 2002, 41, 91-95
10.1002/1521-3773(20[...]
anion of acetylacetone (in water)
C5H7O2- *
water

N  Param.: 13.73

sN Param.: 0.64
*** J. Am. Chem. Soc. 2003, 125, 12980-12986
10.1021/ja036838e
anion of benzyl trifluoromethyl sulfone (in DMSO)
C8H6F3O2S- *
DMSO

N  Param.: 18.67

sN Param.: 0.68
*** J. Am. Chem. Soc. 2007, 129, 9753-9761
10.1021/ja072135b