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1

Sulfonation of Alkenes by Chlorosulfuric Acid, Acetyl Sulfate, and Trifluoroacetyl Sulfate

Bert H. Bakker, Hans Cerfontain

Journal:

European Journal of Organic Chemistry

Year:

1999

Language:

english

File:

PDF, 128 KB

english, 1999

2

ChemInform Abstract: Aliphatic Sulfonation. Part 16. Sulfonation of Alkenes by Chlorosulfuric Acid, Acetyl Sulfate, and Trifluoroacetyl Sulfate.

Bert H. Bakker, Hans Cerfontain

Journal:

Year:

1999

Language:

english

File:

PDF, 40 KB

english, 1999

3

Sulfonation of a series of naphthalenes containing two different oxy substituents

Harold R. W. Ansink, Erwin Zelvelder, Hans Cerfontain

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1993

Language:

english

File:

PDF, 798 KB

english, 1993

4

On the positional reactivity order in the sulfonation of phenyl-and naphthyl-substituted naphthalenes with SO3

Hans Cerfontain, Yousi Zou, Bert H. Bakker

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1994

Language:

english

File:

PDF, 461 KB

english, 1994

5

Aromatic sulfonation. Part 120. Reaction of dihydroxy- and dimesyloxy-naphthalenes with sulfur trioxide in nitromethane. Directing effects and the influence of initial sulfation on the product distributions

Ansink, Harold R. W., Zelvelder, Erwin, de Graaf, Erik J., Cerfontain, Hans

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

1993

Language:

english

File:

PDF, 767 KB

english, 1993

6

Aromatic sulfonation. 97. Isomerization and sulfodeprotonation in the reaction of 1,6-oxido[10]annulene, 1,6-imino[10]annulene, their isomers 1-naphthol and 1-aminonaphthalene, and 11-oxo-1,6-methano[10]annulene with sulfur trioxide

Koeberg-Telder, Ankie, Cerfontain, Hans

Journal:

Journal of Organic Chemistry

Year:

1986

Language:

english

File:

PDF, 622 KB

english, 1986

7

Photochemistry of ?-oxo-oximes. Part 7. Photolysis of some ?-oxo-oxime esters

Baas, Peter, Cerfontain, Hans

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

1979

Language:

english

File:

PDF, 1006 KB

english, 1979

8

Photochemistry of ?-oxo-oximes. Part 5. Photolysis of 3-ethoxyiminobutan-2-one

Baas, Peter, Cerfontain, Hans

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

1979

Language:

english

File:

PDF, 432 KB

english, 1979

9

Aromatic sulphonation. Part 91. The sulphonation of anisole, phenol, phenyl methanesulphonate, potassium phenyl sulphate, and a series of methyl-, bromo-, and chloro-substituted anisoles and phenols in concentrated aqueous sulphuric acid

Cerfontain, Hans, Lambrechts, Hans J. A., Schaasberg-Nienhuis, Zwaan R. H., Coombes, Robert G., Hadjigeorgiou, Panicos, Tucker, Geoffrey P.

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

1985

Language:

english

File:

PDF, 953 KB

english, 1985

10

SULPHONATION OF THE TEN DIMETHYLNAPHTHALENES AND 2-METHYLNAPHTHALENE: ISOMER DISTRIBUTION AND CORRELATIONS WITH MOLECULAR ORBITAL THEORY

Lammertsma, Koop, Cerfontain, Hans

Journal:

Phosphorous and Sulfur and the Related Elements

Year:

1979

Language:

english

File:

PDF, 73 KB

english, 1979

11

Facile Photochemical Synthesis of Some 4-Oxoalkanoic Acids and Esters

Cerfontain, Hans, Van Noort, Paul C. M.

Journal:

Year:

1980

File:

PDF, 122 KB

1980

12

How virtual reality can help visualise and assess geohazards

Havenith, Hans-Balder, Cerfontaine, Philippe, Mreyen, Anne-Sophie

Journal:

International Journal of Digital Earth

Year:

2017

Language:

english

File:

PDF, 4.07 MB

english, 2017

13

Aromatic Sulfonation, 130. – Relative Intramolecular Reactivity of the Insulated π Double Bond and the 14π Annulene Perimeter toward Sulfur Trioxide in the Sulfonation of Isopyrenes

Hans Cerfontain, Bert H. Bakker, Ankie Koeberg-Telder, Oswald Wilmes

Journal:

European Journal of Organic Chemistry

Year:

1997

Language:

english

File:

PDF, 471 KB

english, 1997

14

Photoreactions of trans-10b,10c-Dimethyl-10b,10c-dihydropyrenes

Hans Cerfontain, Ankie Koeberg-Telder, Bert H. Bakker, Reginald H. Mitchell, Masashi Tashiro

Journal:

European Journal of Organic Chemistry

Year:

1997

Language:

english

File:

PDF, 500 KB

english, 1997

15

Aromatic Sulfonation, 131. Formation of Sulfonic Acids and Sulfonic Anhydrides in the Sulfur Trioxide Sulfonation of Some Dialkylbenzenes and 1,ω-Diarylalkanes

Hans Cerfontain, Ankie Koeberg-Telder, Helen C. A. van Lindert, Bert H. Bakker

Journal:

European Journal of Organic Chemistry

Year:

1997

Language:

english

File:

PDF, 556 KB

english, 1997

16

Aromatic protonation.—3: 1H NMR parameters of some methyl substituted anthracenium ions. Study on the site of protonation

Freek van de Griendt, Hans Cerfontain

Journal:

Year:

1980

Language:

english

File:

PDF, 290 KB

english, 1980

17

Aromatic sulphonation—80: Sulphur trioxide sulphonation of some tri- and tetra-methylnaphthalenes

Hans J.A. Lambrechts, Hans Cerfontain

Journal:

Year:

1982

Language:

english

File:

PDF, 449 KB

english, 1982

18

Photochemistry of cyclic 1,2-diketones: dependence of the photoproducts on the ring size and excited state geometry

Hans Cerfontain, PaulL. Verheijdt

Journal:

Journal of Photochemistry

Year:

1981

Language:

english

File:

PDF, 69 KB

english, 1981

19

Photochemistry of dienones-VIII: The low temperature photochemistry of (z)-β-ionone and its photo-isomers

Hans Cerfontain, J.A.J. Geenevasen

Journal:

Year:

1981

Language:

english

File:

PDF, 451 KB

english, 1981

20

Photochemistry of β,γ-enones-VIII: On the remarkable photostability of some β,γ.β',γ'-dienones and the 1,3-acyl shift photoreactivity of two β,γ.γ',δ'-dienones

Reinout H. Van Der Veen, Hans Cerfontain

Journal:

Year:

1985

Language:

english

File:

PDF, 1.03 MB

english, 1985

21

Photochemistry of β, γ-unsaturated ketones-V: The direct irradiation of some γ-phenyl β, γ-enones

Anton J.A. Van der Weerdt, Hans Cerfontain

Journal:

Year:

1981

Language:

english

File:

PDF, 1.08 MB

english, 1981

22

Solutes in sulfuric acid. Part VII. Ionization of benzenesulfonic acid; determination of pKBH by 13C NMR

Hans Cerfontain, Ankie Koeberg-Telder, Cornelis Kruk

Journal:

Tetrahedron Letters

Year:

1975

Language:

english

File:

PDF, 189 KB

english, 1975

23

Sulfonation of alkenes with an excess of sulfur trioxide; stereospecific formation of carbyl sulfates

Bert H Bakker, Hans Cerfontain

Journal:

Tetrahedron Letters

Year:

1987

Language:

english

File:

PDF, 223 KB

english, 1987

24

Sulfonation of alkenes with sulfur trioxide; stereospecific β-sultone formation

Bert H Bakker, Hans Cerfontain

Journal:

Tetrahedron Letters

Year:

1987

Language:

english

File:

PDF, 266 KB

english, 1987

25

Sulfonation of alkenes with sulfur trioxide; reversible stereospecific β-sultone formation

Bert H. Bakker, Hans Cerfontain

Journal:

Tetrahedron Letters

Year:

1989

Language:

english

File:

PDF, 297 KB

english, 1989

26

The di-π-methane reaction of 4-benzyl-5,5-dimethyl-2(5H)-furanone

Paul C.M. van Noort, Hans Cerfontain

Journal:

Tetrahedron Letters

Year:

1977

Language:

english

File:

PDF, 94 KB

english, 1977

27

Sultone formation in the sulphonation of 9-tert-butylanthracene; an unusual rearrangement of the sultone involving the tert-butyl group.

Freek van de Griendt, Hans Cerfontain

Journal:

Tetrahedron Letters

Year:

1978

Language:

english

File:

PDF, 191 KB

english, 1978

28

The photochemistry of benzotricyclo[3.1.0.02,6]Hex-3-ene1

Arjan P. Konwenhoven, Paul G.M. van Noort, Hans Cerfontain

Journal:

Tetrahedron Letters

Year:

1981

Language:

english

File:

PDF, 228 KB

english, 1981

29

Aromatic sulfonation XLVIII: Side chain sulfonation of meso-methylated anthracenes

Ankie Koeberg-Telder, Hans Cerfontain

Journal:

Tetrahedron Letters

Year:

1974

Language:

english

File:

PDF, 108 KB

english, 1974

30

Complex formation between organic nitro compounds and sulfur trioxide

Hans Cerfontain, Mrs. A. Koeberg-Telder

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1970

Language:

english

File:

PDF, 239 KB

english, 1970

31

Aromatic sulfonation. Part 30: Sulfonation of anthracene with sulfur trioxide-dioxane; slow proton transfer in the formation of 9-anthracenesulfonic acid

Mrs. A. Koeberg-Telder, Hans Cerfontain

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1972

Language:

english

File:

PDF, 417 KB

english, 1972

32

Photochemistry of acyclic β,γ-unsaturated ketones. The effect of substituents at the α-C and the carbonyl group on the occurrence of the oxa-di-π-methane rearrangement

Anton J. A. van der Weerdt, Hans Cerfontain

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1977

Language:

english

File:

PDF, 173 KB

english, 1977

33

Photochemistry of dienones. Part IX. Photochemistry of (E)- and (Z)-α-ionone

Cornelis P. Visser, Hans Cerfontain

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1981

Language:

english

File:

PDF, 359 KB

english, 1981

34

Photochemistry of dienones. Part IX. Photochemistry of (E)- and (Z)-α-ionone

Cornells P. Visser, Hans Cerfontain

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1981

Language:

english

File:

PDF, 70 KB

english, 1981

35

On the relative reactivity of the C C double bond and the [10] annulene moiety versus SO3

Hans J. A. Lambrechts, Hans Cerfontain

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1981

Language:

english

File:

PDF, 153 KB

english, 1981

36

Ring inversion in some fully α-methylated cycloalkane-1,2-diones

Paul L. Verheidt, Cor Kruk, Hans Cerfontain

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1982

Language:

english

File:

PDF, 278 KB

english, 1982

37

Reactions of overcrowded polymethylbenzenedisulfonic acids in concentrated aqueous sulfuric acid; protiodesulfonation and intramolecular sulfonic anhydride formation

Ankie Koeberg-Telder, Hans Cerfontain

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1982

Language:

english

File:

PDF, 582 KB

english, 1982

38

Aromatic sulfonation 85. Halogen directing and steric effects in the sulfonation of the twelve halogenotoluenes and some related compounds

Hans Cerfontain, Ankie Koeberg-Telder, Khosrow Laali, Hans J. A. Lambrechts, Peter de Wit

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1982

Language:

english

File:

PDF, 319 KB

english, 1982

39

Aromatic sulfonation 84. Sulfonation of bi- and tri-phenylene

Hans Cerfontain, Khosrow Laali, Hans J. A. Lambrechts

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1982

Language:

english

File:

PDF, 350 KB

english, 1982

40

Intramolecular competition between the di-π-methane and the oxa-di-π-methane rearrangements in a triplet-excited β, γ, β1, γ1-dienone.

Reinout van der Veen, Cornelis Kruk, Hans Cerfontain

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1982

Language:

english

File:

PDF, 171 KB

english, 1982

41

Photochemistry of α,α,ω,ω-tetramethyl-1,2-cycloalkanediones; influence of the conformation of the diketo moiety on the photochemical behaviour

Paul L. Verheijdt, Hans Cerfontain

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1983

Language:

english

File:

PDF, 937 KB

english, 1983

42

On the luminescence and photochemistry of the lower excited electronic states of some acyclic 1,2-diketones

Louis A. Sarphatie, Paul L. Verheijdt, Hans Cerfontain

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1983

Language:

english

File:

PDF, 524 KB

english, 1983

43

Photochemistry of dienones. Part 12. Photochemistry of (E)-α- and (E)-β-damascone

Cornelis P. Visser, Hans Cerfontain

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1983

Language:

english

File:

PDF, 504 KB

english, 1983

44

Solutes in sulfuric acid. Part IX. Effect of para-substitution on the ionization of the oxonium ions of phenol and anisole

Hans J. A. Lambrechts, Hans Cerfontain

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1983

Language:

english

File:

PDF, 294 KB

english, 1983

45

Aromatic sulfonation 86. Sulfonation of pyrene, 1-methylpyrene and perylene

Hans Cerfontain, Khosrow Laali, Hans J. A. Lambrechts

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1983

Language:

english

File:

PDF, 551 KB

english, 1983

46

Photochemistry of dienones. Part 13. Photochemistry of the valeryl analogues of (E)-α- and (E)-β-ionone; absence of Norrish type II processes

Cornelis P. Visser, Hans van der Wel, Hans Cerfontain

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1983

Language:

english

File:

PDF, 371 KB

english, 1983

47

Solutes in sulfuric acid. Part VIII. Protonation of phenol, 4-fluorophenol and the 2- and 4-sulfonates of anisole and phenol in concentrated aqueous sulfuric acid; determination of pKa values by means of 13C NMR

Ankie Koeberg-Telder, Hans J. A. Lambrechts, Hans Cerfontain

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1983

Language:

english

File:

PDF, 585 KB

english, 1983

48

Photochemistry of dienones. Part 11. Photochemistry of the pivaloyl analogues of (E)-α- and (E)-β-ionone

Cornelis P. Visser, Hans van der Wel, Hans Cerfontain

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1983

Language:

english

File:

PDF, 511 KB

english, 1983

49

Photochemical and Lewis-acid-catalyzed rearrangement of 1-phenyl-4-methyl-3,6-dioxabicyclo[3.1.0]hexan-2-one into its tetronic acid isomer

Maria J. Caus, Hans Cerfontain, Juan F. Piniella

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1983

Language:

english

File:

PDF, 519 KB

english, 1983

50

Steric control in the photochemical (E)-(Z) isomerization of some (over)crowded α-oxo oxime ethers

Theo S. V. Buys, Hans Cerfontain, Jan A. J. Geenevasen, Margareth J. C. M. Koppes, Frank Stunnenberg

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1985

Language:

english

File:

PDF, 607 KB

english, 1985

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