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Mayr's Database Of Reactivity Parameters: Searches
Mayr's Database of Reactivity Parameters

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Name Solvent Reactivity
Parameters
Classification Reference
(title or year)
tritylium ion (Ph3C+)
C19H15*

E Param.: 0.51

-J. Am. Chem. Soc. 2003, 125, 286-295
10.1021/ja021010y
benzhydrylium ion Ph2CH+
C13H11*

E Param.: 5.47

*****J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
(4-Br-C6H4)-(CO)-CH=SMe2
*
dichloromethane

N  Param.: 11.95

sN Param.: 0.76
***Angew. Chem. Int. Ed. 2009, 48, 5034-5037
10.1002/anie.200900933
toluene
C7H8*
dichloromethane

N  Param.: -4.36

sN Param.: 1.77
*****J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
N,N-dimethyl dithiocarbamate (in MeCN)
*
MeCN

N  Param.: 20.93

sN Param.: 0.69
***Org. Biomol. Chem. 2011, 9, 8046-8050
10.1039/c1ob06245j
m-xylene
C8H10*
dichloromethane

N  Param.: -3.57

sN Param.: 2.08
*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
(E)-propenylbenzene
C9H10*
dichloromethane

N  Param.: -0.49

sN Param.: 1.18
*****J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
Ph3P=C(CH3)-CO2Et
*
dichloromethane

N  Param.: 13.09

sN Param.: 0.73
***J. Am. Chem. Soc. 2009, 131, 704-714
10.1021/ja8056216
Danishefskys diene
C8H16O2Si*
dichloromethane

N  Param.: 8.57

sN Param.: 0.84
*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
2-methylthiophene
C5H6S*
dichloromethane

N  Param.: 1.35

sN Param.: 0.99
*****J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
N-methylpyrrole
C5H7N*
dichloromethane

N  Param.: 5.85

sN Param.: 1.03
*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
Ph3P=CH-CO2Et
*
dichloromethane

N  Param.: 12.79

sN Param.: 0.77
***J. Am. Chem. Soc. 2009, 131, 704-714
10.1021/ja8056216
1,3-dimethoxybenzene
C8H10O2*
dichloromethane

N  Param.: 2.48

sN Param.: 1.09
*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
1-phenyl-1-(trimethylsiloxy)ethene
C11H16OSi*
dichloromethane

N  Param.: 6.22

sN Param.: 0.96
*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
allyltrimethylsilane
C6H14Si*
dichloromethane

N  Param.: 1.68

sN Param.: 1.00
*****J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
5-(trimethylsiloxy)-2,3-dihydrofuran
C7H14O2Si*
dichloromethane

N  Param.: 12.56

sN Param.: 0.70
*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
2-methylfuran
C5H6O*
dichloromethane

N  Param.: 3.61

sN Param.: 1.11
*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
(2-methylallyl)tributylstannane
C16H34Sn*
dichloromethane

N  Param.: 7.48

sN Param.: 0.89
*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
2-(trimethylsiloxy)-5,6-dihydro-4H-pyran
C8H16O2Si*
dichloromethane

N  Param.: 10.61

sN Param.: 0.86
*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
allyltriphenylstannane
C21H20Sn*
dichloromethane

N  Param.: 3.09

sN Param.: 0.90
*****J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y

News

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  • 01/30/25:
    Sesamol-derived ortho-quinone methides (o-QM) have been added (ChemEurJ 2024, e202403785 & OBC 2025, 23, 827-834)
  • 05/22/24:
    Lactone enolates have been added (JOC 2024, 89, 6915-6928).
  • 11/13/24:
    2-Methylene-1,2-dihydropyridines (2-pyNHOs) have been added (EurJOC 2024, 27, e202400373).
  • 05/21/24:
    Mesoionic pyridinium-derived N-heterocyclic olefins (py-mNHOs) have been added (Angew. Chem. Int. Ed. 2024, 63, e202318283).
  • 10/19/23:
    Enamines derived from 4-(alkylthio)-3-imidazolines and aldehydes have been added (ChemEurJ 2023, doi: 10.1002/chem.202302764).
  • 09/28/23:
    Mesoionic N-heterocyclic olefins (mNHOs) have been added (Angew. Chem. Int. Ed. 2023, 62, e202309790).
  • 07/05/23:
    S-Cyanomethylated imidazolidine-4-thione-derived enamines have been added (ChemComm 2023, 59, 8091).
  • 03/16/23:
    Cyclic alpha-diazo carbonyl compounds added (EurJOC 2023, 26, e202300005)
  • 01/30/23:
    NADH and NADPH reactivities (in water, pH 7) determined by Mayer and Moran have been added (OBC 2022, 21, 85-88).
  • 09/20/22:
    Alkenyl boronate nucleophilicity by Liu, Ready and co-workers has been added (JACS 2022, 144, 16118).
  • 01/30/23:
    Electrophilicities of diazo compounds in azo couplings (ChemEurJ 2022, 28, e202201376)
  • 01/30/23:
    Diazocyclopentadiene added (Synthesis 2023, 55, 354-358)
  • 01/30/23:
    Electrophilic indoles added (ChemCommun 2021, 57, 10071-10074)
  • 04/13/21:
    Cyclic Michael acceptors added (Chem. Sci. 2021, 12, 4850-4865)
  • 05/21/21:
    Thiophenolates (in DMSO) added (JOC 2021, 86, 5965-5972)
  • 05/06/20:
    Heteroallenes added (JACS 2020, 142, 8383-8402).
  • 01/27/20:
    Pyrrolidines and Imidazolidinones added (JACS 2020, 142, 1526-1547).
  • 05/06/20:
    GSH reactivity added (Angew. Chem. Int. Ed. 2019, 58, 17704-17708)
  • 01/30/23:
    Phenolates added (JOC 2019, 84, 8837-8858)
  • 04/24/18:
    Ketones added (JACS 2018, 140, 5500).
  • 11/03/17:
    Allyl-boron nucleophiles added (JACS 2017, 139, 15324)
  • 04/23/18:
    Peroxide anions added (Angew. Chem. Int. Ed. 2017, 56, 13279).
  • 04/23/18:
    Michael acceptors added (JACS 2017, 139, 13318).
  • 06/16/17:
    Nucleophilicities of VNS reagents (JOC 2017, 82, 1011).