Výsledky vyhledávání - "Frank W. Eastwood"

Pyrolytic Generation and Rearrangement ofN-Substituted 1,2-Didehydrocarbazoles

Autor: Francesca Ercole, Roger F. C. Brown, Mark Mattinson, N. Choi, K. J. Coulston, Frank W. Eastwood, Roger J. Mulder, Julianna M. Horvath, Hua Chee Ooi

Publikováno v: Liebigs Annalen. 1997:1931-1940

The flash vacuum pyrolysis (900–940°C) of a series of N-R-substituted carbazole-1,2-dicarboxylic anhydrides (R = methyl, phenyl, o-tolyl, benzyl, and ethyl) leads to 1,2-didehydrocarbazoles which undergo ring expansion, cyclisation, and other reac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b69ba6d4b54493e53e58e6c0015bcbda
https://doi.org/10.1002/jlac.199719970920

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Preparation of new 2,4-disubstituted oxazoles from N-acylaziridines

Autor: Frank W. Eastwood, Patrick Perlmutter, Qi Yang

Publikováno v: Journal of the Chemical Society, Perkin Transactions 1. :35-42

The efficiency of the ring enlargement of 2-substituted N-acylaziridines to dihydrooxazoles followed by nickel peroxide oxidation to give 2,4-disubstituted oxazoles as a synthetic route is examined. Sodium iodide-promoted ring enlargements work well

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0adf54c57158c62f2b298e20a0368288
https://doi.org/10.1039/a604091h

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Cyclopent[a]indene (benzopentalene): Generation by flash vacuum pyrolysis and subsequent dimerisation

Autor: N. Choi, Frank W. Eastwood, K. J. Coulston, Leonardus W. Jenneskens, Roger F. C. Brown, U. E. Wiersum

Publikováno v: Tetrahedron Letters. 35:4405-4408

Cyclopent[ a ]indene (benzopentalene, 7 ) is generated by flash vacuum pyrolysis of 3-phenylphthalic anhydride ( 6 ), biphenylene ( 3 ) or diphenic anhydride ( 4 ). It dimerises readily and adds cyclopentadiene above −70 °C, but it does not equili

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c697242e4b832a3a1aeace92a397b06b
https://doi.org/10.1016/s0040-4039(00)73368-5

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Preparation of new 24-disubstituted oxazoles

Autor: Qi Yang, Patrick Perlmutter, Frank W. Eastwood

Publikováno v: Tetrahedron Letters. 35:2039-2042

Ring enlargement of N -acylaziridines followed by nickel peroxide oxidation provides a variety of 2,4-disubstituted-1,3-oxazoles suitable for bis- and tris-oxazole synthesis.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::eb3caa231dba2da641666fe2541e8edd
https://doi.org/10.1016/s0040-4039(00)73043-7

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The ethyne-ethylidene rearrangement: Formation of 3-ethynyl-and 1-ethynylacenaphthylene on flash vacuum pyrolysis of 1,7-diethynylnaphthalene

Autor: Neil Wong, Frank W. Eastwood, Roger F. C. Brown

Publikováno v: Tetrahedron Letters. 34:1223-1226

1,7-Diethynylnaphthalene on flash vacuum pyrolysis at 1100°C/0.05 mm gave 3-ethynylacenaphthylene and 1-ethynylacenaphthylene (80:20). This finding is interpreted in terms of initial formation of 3-ethynylacepnaphthylene, ring closure of some of thi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8c34f569d46b4c11ba9ad860aa487cb2
https://doi.org/10.1016/s0040-4039(00)77534-4

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ChemInform Abstract: Synthesis of Indeno(1,2-b)indole by Flash Vacuum Pyrolysis of 2- Phenylquinoline-3,4-dicarboxylic Anhydride

Autor: K. J. Coulston, Roger F. C. Brown, Frank W. Eastwood, M. R. Moffat

Publikováno v: ChemInform. 22

Flash vacuum pyrolysis of 2-phenylquinoline-3,4-dicarboxylic anhydride at 800°C/0.06 Torr. gave indeno[1,2- b ]indole. This was reduced to form 5,10-dihydroindeno[1,2-b]indole and it added nucleophiles to give dihydroindenoindoles with the 10-substi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::443595727e8f71fdef24d591d055536f
https://doi.org/10.1002/chin.199151179

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ChemInform Abstract: Pyrolysis of Quinoline-3,4-dicarboxylic Anhydrides Bearing 2-Phenyl, 2- Benzyl and 2-o-Tolyl Substituents: Formation of Products of Carbene Insertion and Addition

Autor: K. J. Coulston, Roger F. C. Brown, M. R. Moffat, Frank W. Eastwood

Publikováno v: ChemInform. 23

Flash vacuum pyrolysis of 2-phenylquinoline-3,4-dicarboxylic anhydride at 800°/0.06 mm gave indeno[1,2- b ]indole (30–40%), which readily added nucleophiles Y − at C-10 to give 5,10-dihydro derivatives (Y  H, Me, Ph, NEt 2 , OMe, CH(COOMe) 2

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d92e21a53dd2e64ff4111321d00b55e2
https://doi.org/10.1002/chin.199252082

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ChemInform Abstract: Retro-Diels-Alder Fragmentation of 2,5,6-Triphenyl-3,4- didehydropyridine Generated by Flash Vacuum Pyrolysis at 900°C

Autor: Frank W. Eastwood, Roger F. C. Brown, N. Choi

Publikováno v: ChemInform. 23

2,5,6-Triphenyl-3,4-didehydropyridine, generated by FVP of the corresponding 3,4-dicarboxylic anhydride (6) at 900°C/0.02 mm, undergoes mainly retro-Diels-Alder cleavage to 1,4-diphenylbutadiyne and benzonitrile.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1b18e76b9f074bf9e503644eaff0a77e
https://doi.org/10.1002/chin.199252075

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ChemInform Abstract: The Ethyne-Ethylidene Rearrangement: Formation of 3-Ethynyl- and 1- Ethynylacenaphthylene on Flash Vacuum Pyrolysis of 1,7- Diethynylnaphthalene

Autor: Frank W. Eastwood, Roger F. C. Brown, Neil Wong

Publikováno v: ChemInform. 24

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0e8ca1a120a5ede2f3fb1791ae7af1e5
https://doi.org/10.1002/chin.199327168

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