Flash Pyrolysis – Synthetic and Mechanistic Aspects
Some examples of synthetically useful flash pyrolysis reactions are presented, and the reaction mechanisms are discussed. Cyanocyclopentadienes, -indenes, and -pyrroles are produced by pyrolysis of the appropriate triazoloarenes or isatins, or as the end products of carbene-nitrene rearrangements....
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| Language: | deu |
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Swiss Chemical Society
1977-07-01
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| Series: | CHIMIA |
| Online Access: | https://www.chimia.ch/chimia/article/view/9356 |
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| _version_ | 1850170639040643072 |
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| author | Curt Wentrup |
| author_facet | Curt Wentrup |
| author_sort | Curt Wentrup |
| collection | DOAJ |
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Some examples of synthetically useful flash pyrolysis reactions are presented, and the reaction mechanisms are discussed. Cyanocyclopentadienes, -indenes, and -pyrroles are produced by pyrolysis of the appropriate triazoloarenes or isatins, or as the end products of carbene-nitrene rearrangements. Fulvenallene is formed from benzocyclopropene, phthalide, phenyldiazomethane, 7-norbornadienyl acetate, and other precursors. Cyclopropa[b]naphthalene and cyclopropa[b]-1,6-methano 10]-annulene yield 2-ethynylindene and acenaphthene, respectively. α-Coumaranone yields fulvene. Pyrido- and pyrimido[2,1-a]isoindoles are obtained by carbene-carbene rearrangements, starting from v-triazolo[1,5-a]-azines. The pyrolysis of 5-aryltetrazoles leads to diazocompounds, triazoloazines, or carbenes. 2,5-Diaryltetrazoles give indazoles or fluorenes, also obtainable from 2,4-diaryl-1,3,4-oxa-diazolin-5-ones. Arylacetylenes, five- and six-membered hetaryl-acetylenes, isocyanamines, and ketenimines are formed by pyrolysis of appropriately 4-substituted isoxazol-5-ones.
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| format | Article |
| id | doaj-art-979f5585c6fa4e21af30909b0f0214f5 |
| institution | OA Journals |
| issn | 0009-4293 2673-2424 |
| language | deu |
| publishDate | 1977-07-01 |
| publisher | Swiss Chemical Society |
| record_format | Article |
| series | CHIMIA |
| spelling | doaj-art-979f5585c6fa4e21af30909b0f0214f52025-08-20T02:20:26ZdeuSwiss Chemical SocietyCHIMIA0009-42932673-24241977-07-0131710.2533/chimia.1977.258Flash Pyrolysis – Synthetic and Mechanistic AspectsCurt Wentrup0Fachbereich Chemie der Universität Marburg, BRD Some examples of synthetically useful flash pyrolysis reactions are presented, and the reaction mechanisms are discussed. Cyanocyclopentadienes, -indenes, and -pyrroles are produced by pyrolysis of the appropriate triazoloarenes or isatins, or as the end products of carbene-nitrene rearrangements. Fulvenallene is formed from benzocyclopropene, phthalide, phenyldiazomethane, 7-norbornadienyl acetate, and other precursors. Cyclopropa[b]naphthalene and cyclopropa[b]-1,6-methano 10]-annulene yield 2-ethynylindene and acenaphthene, respectively. α-Coumaranone yields fulvene. Pyrido- and pyrimido[2,1-a]isoindoles are obtained by carbene-carbene rearrangements, starting from v-triazolo[1,5-a]-azines. The pyrolysis of 5-aryltetrazoles leads to diazocompounds, triazoloazines, or carbenes. 2,5-Diaryltetrazoles give indazoles or fluorenes, also obtainable from 2,4-diaryl-1,3,4-oxa-diazolin-5-ones. Arylacetylenes, five- and six-membered hetaryl-acetylenes, isocyanamines, and ketenimines are formed by pyrolysis of appropriately 4-substituted isoxazol-5-ones. https://www.chimia.ch/chimia/article/view/9356 |
| spellingShingle | Curt Wentrup Flash Pyrolysis – Synthetic and Mechanistic Aspects CHIMIA |
| title | Flash Pyrolysis – Synthetic and Mechanistic Aspects |
| title_full | Flash Pyrolysis – Synthetic and Mechanistic Aspects |
| title_fullStr | Flash Pyrolysis – Synthetic and Mechanistic Aspects |
| title_full_unstemmed | Flash Pyrolysis – Synthetic and Mechanistic Aspects |
| title_short | Flash Pyrolysis – Synthetic and Mechanistic Aspects |
| title_sort | flash pyrolysis synthetic and mechanistic aspects |
| url | https://www.chimia.ch/chimia/article/view/9356 |
| work_keys_str_mv | AT curtwentrup flashpyrolysissyntheticandmechanisticaspects |