Mayr's Database of Reactivity Parameters

Acceptor-Substituted Ethylenes

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Name Solvent Reactivity
Parameters
Classification Reference
(title or year)
2,6-di-tert.butyl-4-(3,5-difluorobenzylidene)cyclohexa-2,5-dienone
C21H24F2O *

E Param.: -14.50

*** Eur. J. Org. Chem. 2009, , 3203-3211
10.1002/ejoc.200900299
2,6-di-tert.butyl-4-(4-nitrobenzylidene)cyclohexa-2,5-dienone
C21H25NO3 *

E Param.: -14.36

*** Eur. J. Org. Chem. 2009, , 3203-3211
10.1002/ejoc.200900299
4-phenylbut-3-yn-2-one
C10H8O *

E Param.: -16.90

- Angew. Chem. Int. Ed. 2019, 58, 17704-17708
10.1002/anie.201909803
hex-3-yn-2-one
C6H8O *

E Param.: -17.90

- Angew. Chem. Int. Ed. 2019, 58, 17704-17708
10.1002/anie.201909803
butynone
C4H4O *

E Param.: -16.60

- Angew. Chem. Int. Ed. 2019, 58, 17704-17708
10.1002/anie.201909803
(E)-6-(4-nitrobenzylidene)benzo[d][1,3]dioxol-5(6H)-one
C14H9NO5 *

E Param.: -13.15

*** Chem. Eur. J. 2025, 31, e202403785
10.1002/chem.202403785
(E)-6-(4-(trifluoromethyl)benzylidene)benzo[d][1,3]dioxol-5(6H)-one
C15H9F3O3 *

E Param.: -13.54

*** Chem. Eur. J. 2025, 31, e202403785
10.1002/chem.202403785
(E)-6-(3-fluorobenzylidene)benzo[d][1,3]dioxol-5(6H)-one
C14H9FO3 *

E Param.: -14.00

*** Chem. Eur. J. 2025, 31, e202403785
10.1002/chem.202403785
(E)-6-(4-chlorobenzylidene)benzo[d][1,3]dioxol-5(6H)-one
C14H9ClO3 *

E Param.: -13.99

*** Chem. Eur. J. 2025, 31, e202403785
10.1002/chem.202403785
(E)-6-benzylidenebenzo[d][1,3]dioxol-5(6H)-one
C14H10O3 *

E Param.: -14.47

*** Chem. Eur. J. 2025, 31, e202403785
10.1002/chem.202403785