Výsledky vyhledávání - "Anthony E. Tipping"

Reaction of octafluorotoluene, 3,5-dichlorotrifluoropyridine, 3-chlorotetrafluoro-yridine and tetrafluoropyrimidine with alkali-metal oximates

Autor: Waheed Jondi, Anthony E. Tipping, R. Eric Banks

Publikováno v: Journal of Fluorine Chemistry. 80:109-116

Treatment of octafluorotoluene (2) with approximately one-molar equivalents of the oximates R1R2C = NO~ M+ (R1 = R2=Me;R1 = R2 = Ph; R1 = Me, R2 = Ph;M = Na) (6a-c) in diethyl ether gives 4-(R1R2C = NO)C6F4CF3 (7a-c) as the only isolated products. Co

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::02a5b47e2a7cc001d0e2c0ae403a12a5
https://doi.org/10.1016/s0022-1139(96)03502-6

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Reaction of pentafluoropyridine with lithium hydrazonides; competing monosubstitution at the 2- and 4-positions

Autor: Anthony E. Tipping, Waheed Jondi, R. Eric Banks

Publikováno v: Journal of Fluorine Chemistry. 77:87-92

Treatment of pentafluoropyridine (1) in diethyl ether with approximately 1 M equiv. of the hydrazonides Ph2C=NNHLi (3a) and Ph2C=NNLiPh (3b) under mild conditions gives good yields (62% and 83%) of 4- and 2-(Ph2C=NH)C5F4N (5a and 6a) and 4- and 2-(Ph

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f6eef75bbfc7178dbce525e47c3ea369
https://doi.org/10.1016/0022-1139(96)03394-5

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Reaction of metal diethylnitroxides with pentafluoropyridine, pentafluorobenzene, octafluorotoluene and 2-chloro-3- or 5-nitropyridine

Autor: A. J. Adamson, Anthony E. Tipping, Waheed Jondi

Publikováno v: Journal of Fluorine Chemistry. 76:67-78

Treatment of the nitroxides Et2NO− M+ (2a-c) (M = Na, Li, K) and (Et2NO−)2 Ba2+ (2d) with pentafluoropyridine (3) at room temperature (1 d) gave in all cases the compounds Py-NEt2 (8), Py-ONEt2 (9), Py-NHEt (10) and Py-O−H2NEt2 (11) (where Py =

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b67f9598b797cf7164746f1f1509ee43
https://doi.org/10.1016/0022-1139(95)03355-6

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Unsaturated nitrogen compounds containing fluorine. Part 20. Reactions of 2,5-dichloro-1,1,1,6,6,6-hexafluoro-3,4-diazahexa-2,4-diene and hexafluoroacetone azine with cycloheptatriene

Autor: Anthony E. Tipping, Mohammad M. Abdul-Ghani

Publikováno v: Journal of Fluorine Chemistry. 73:203-211

Thermal reaction (70 °C) of the dichloroazine CF 3 CCl=NN=CClCF 3 , 1 , with cycloheptatriene ( 7 ) gave a complex mixture from which the major products were separated and identified as the dehydrochlorinated rearranged [32] cycloadducts 9 (28%) and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e317f0908452ad6eb5d18e9efeb723ea
https://doi.org/10.1016/0022-1139(95)03228-6

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Unsaturated nitrogen compounds containing fluorine. Part 19. Cycloaddition reactions of 2,5-dichloro-1,1,1,6,6,6-hexafluoro-3,4-diazahexa-2,4-diene with cycloalkenes and cyclodienes

Autor: Mohammad M. Abdul-Ghani, Anthony E. Tipping

Publikováno v: Journal of Fluorine Chemistry. 73:189-202

Thermal reaction (20–70 °C) of the dichloroazine CF 3 CCl=NN=CClCF 3 , 2 , with cyclopentene (in CH 2 Cl 2 solvent), cycloheptene, indene, acenaphthylene, 2,3-dihydrofuran, 3,4-dihydro-2 H -pyran, norbornadiene, cyclopentadiene and dicyclopentadie

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d37cb1630c6a12743dc64eea1c3dd07e
https://doi.org/10.1016/0022-1139(95)03227-5

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Fluorinated acetylenes Part 16. The reactions of ethyl 4,4,4-trifluorobut-2-ynoate and hexafluorobut-2-yne with quadricyclane and the hydrogenation and thermal rearrangement of the resulting 1:1 cycloadducts

Autor: Nadia N.E. Suliman, Anthony E. Tipping, Michael G. Barlow

Publikováno v: Journal of Fluorine Chemistry. 73:61-67

Thermal reaction of ethyl 4,4,4-trifluorobut-2-ynoate ( 1 ) and hexafluorobut-2-yne ( 2 ) with quadricyclane ( 3 ) gave the exo -1:1 adducts ( 4a ) and ( 4b ), respectively, by a ( σ 2 s + σ 2 s + η 2 s ) cycloaddition pathway. Hydrogenation (1 mo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2350d554cd86fd3924281d389ed7b673
https://doi.org/10.1016/0022-1139(94)03203-c

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Unsaturated nitrogen compounds containing fluorine. Part 17. The reactions of 3,5-bis(trifluoromethyl)-1H-1,2,4-triazole with alkynes, alkenes and diazomethane, and of sodium 3,5-bis(trifluoromethyl)-1,2,4-triazolide with halogen compounds

Autor: Mohamad M. Abdul-Ghani, Anthony E. Tipping

Publikováno v: Journal of Fluorine Chemistry. 72:135-145

Thermal reaction of 3,5-bis(trifluoromethyl)-1 H -1,2,4-triazole (1) with the alkynes HC≡CCO 2 Et (7) (120 °C), Me-O 2 CC≡CCO 2 Me (8) (120 °C) and Me 3 SiC ≡ CSiMe 3 (9) (150 °C) gave the following products where R = CF 3 C = NC ( CF 3 ) =

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::875f3aa7c02f2ea580183e78801a419d
https://doi.org/10.1016/0022-1139(94)03181-x

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Unsaturated nitrogen compounds containing fluorine. Part 18. Novel cycloaddition products from the reaction of quadricyclane with fluorinated azines and the azomethine imide 2-hexafluoroisopropylidene-3-methyl-3-phenyl-5,5-bis(trifluoromethyl)tetrahydropyrazol-2-ium-1-ide

Autor: Nadia N.E. Suliman, Anthony E. Tipping, Michael G. Barlow

Publikováno v: Journal of Fluorine Chemistry. 72:147-156

Reaction of quadricyclane (6) with the azine CF3CCl = NN = CClCF3 (1a) in dichloromethane at 70 °C afforded the expected exo-[2 + 2 + 2] cycloadduct 8a (70%), and the unexpected exo-1,3-dipolar cycloadduct 3a, formed by a non-concerted pathway and i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::478425605aafce168f87d9571e00db32
https://doi.org/10.1016/0022-1139(94)03183-z

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Unsaturated nitrogen compounds containing fluorine. Part 16. The synthesis of 3,5-bis(trifluoromethyl)-1H-1,2,4-triazole and some 4-substituted derivatives from 2,5-dichloro-1,1,1,6,6,6-hexafluoro-3,4-diazahexa-2,4-diene

Autor: Mohamad M. Abdul-Ghani, Anthony E. Tipping

Publikováno v: Journal of Fluorine Chemistry. 72:95-106

The dichloroazine 5 has been converted into the monoaminoazines CF 3 C(NHR)=NN=CClCF 3 (6) [a, R = Ph (89%); b, R = H (81%); c, R = Me (89%); d, R = CH 2 CO 2 Me (96%); e, R = CH 2 CO 2 Et (95%)] and the diaminoazines CF 3 C(NHR) = NN = C(NHR)CF 3 (4

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bdec1999ba5c69efefd268f07b888867
https://doi.org/10.1016/0022-1139(94)03199-a

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2-(2,6-Difluorophenyl)-1,3-dithiane and 2-(2,6-Difluorophenyl)-1,3-dithiane 1,1,3,3-Tetraoxide. The Role of Oxidation in Locking a Molecular Conformation

Autor: Ronald E. Banks, Anthony E. Tipping, Robin G. Pritchard, A. J. Adamson, K. N. Mothersdale, T. Manley

Publikováno v: Acta Crystallographica Section C Crystal Structure Communications. 51:772-775

In 2-(2,6-difluorophenyl)-1,3-dithiane, (1), C 10 H 10 F 2 S 2 , described here, and its unfluorinated counterpart [Kalff & Romers (1966). Acta Cryst. 20, 490-496], the conformation about the C−C bond joining the two rings is similar, with S−C−

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7d6141f62013cf9bb11f1885bf91cf4e
https://doi.org/10.1107/s0108270194011364

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