Výsledky vyhledávání - "Brett R. Pool"

Structural Studies on Cycloadducts of Furan, 2-Methoxyfuran, and 5-Trimethylsilylcyclopentadiene with Maleic Anhydride and N-Methylmaleimide

Autor: Brett R. Pool, Jonathan M. White, Yit Wooi Goh

Publikováno v: The Journal of Organic Chemistry. 73:151-156

The early stages of the retro-Diels-Alder reaction are clearly apparent in the structures of the cycloadducts formed between furan or 5-trimethylsilylcyclopentadiene with maleic anhydride and N-methylmaleimide. The degree of lengthening of the C-C bo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c494d553825d206764ddbea4b5d65f6f
https://doi.org/10.1021/jo7018575

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Carbon–silicon hyperconjugation

Autor: Alan Happer, Janice N.G, Jonathan M. White, Brett R. Pool

Publikováno v: Journal of Organometallic Chemistry. 659:10-14

Hyperconjugation between the CH2Si bond and the charged pyridinium π system in the N-methyl 4-trimethylsilylmethyl pyridinium ion (8), manifests in the crystal structure as lengthening of the CH2Si bond, shortening of the CH2Cipso bond and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::62adf757dcbcb9a56cfb133e6065b335
https://doi.org/10.1016/s0022-328x(02)01595-4

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Gauging the strength of donor–acceptor interactions in organic molecules

Autor: Brett R. Pool, Jonathan M. White, Benjamin L. Harris, Shinn-Dee Yeoh

Publikováno v: Acta Crystallographica Section A Foundations and Advances. 73:C908-C908

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e68167df7eead811a8e5dbb08eb3dfd8
https://doi.org/10.1107/s2053273317086661

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X-ray Structural Studies on a Series of Oxygenated Anthracene Cycloadducts. Evidence for π−σ* Negative Homohyperconjugation in the Ground State

Autor: Brett R. Pool, Jonathan M. White, P. Peter Wolynec

Publikováno v: The Journal of Organic Chemistry. 65:7595-7601

Application of the variable oxygen probe to low-temperature crystal data from the series of oxygenated anthracene cycloadducts 10-16, revealed a strong response of the C-OR bond distance in these structures to the electron demand of the OR group. It

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a10468a408583a19c6d80d64f62bf8d
https://doi.org/10.1021/jo0055638

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Silicon-directed acid ring-opening of allyltrimethylsilane oxide. X-ray structures of 3-triisopropylsilyl-2-(2,4-dinitrobenzoyloxy)-1-propanol and 3-triisopropylsilyl-2-(2,4,6-trinitrobenzoyloxy)-1-propanol

Autor: Brett R. Pool, William Issa, Fatmir Badali, Jonathan M. White

Publikováno v: Journal of Organometallic Chemistry. 575:251-260

Allyltrimethylsilane oxide 5 undergoes regiospecific ring-opening with carboxylic acids in chloroform to give the hydroxy esters 6a–e. In polar solvents competing elimination results in the formation of allyl alcohol. Allyltriisopropylsilane oxide

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::687d1923e987130206f4e0ea286ae702
https://doi.org/10.1016/s0022-328x(98)01002-x

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Structural Investigations into the retro-Diels-Alder Reaction. Experimental and Theoretical Studies

Autor: Joanne H. P. Koh, David M. Birney, Jonathan M. White, Tang Kuan Lim, Brett R. Pool

Publikováno v: Journal of the American Chemical Society. 124(18)

The manifestations of the retro-Diels Alder reaction in the ground-state structures of a range of cyclopentadiene and cyclohexadiene cycloadducts 9-15 have been investigated by a combination of techniques. These include low-temperature X-ray crystall

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a45f2d106385cd5fd62236175a1b3f2
https://pubmed.ncbi.nlm.nih.gov/11982374

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Applying the Structure Correlation Principle to retro Diels Alder Reactions

Autor: Rachel Goh, Brett R. Pool, Jonathan M. White, Jesse Roth-Barton

Publikováno v: Acta Crystallographica Section A Foundations and Advances. 70:C923-C923

The early stages of molecular rearrangements are often apparent in the crystal structures of molecules susceptible to that rearrangement. For example, if a particular bond is broken, or if a particular group migrates during the rearrangement, then de

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c623be6789a201947f8216c601a2e77c
https://doi.org/10.1107/s2053273314090767

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Structural manifestations of the retro diels-alder reaction

Autor: Jonathan M. White, Brett R. Pool

Publikováno v: Organic letters. 2(22)

Examination of selected cyclohexene derivatives which are fixed into the boat conformation reveals structural deviations from “normal” C−C bond distances consistent with the early stages of the retro Diels−Alder reaction.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1bcfea2d854863ab2ebfec515a8a5ef9
https://pubmed.ncbi.nlm.nih.gov/11082020

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Influence of the ferrocene substituent on C–O bonds at the α position. Results from low-temperature X-ray structural studies

Autor: Chee-Chung Sun, Jonathan M. White, Brett R. Pool

Publikováno v: Journal of the Chemical Society, Dalton Transactions. :1269

Results from structural studies have demonstrated that the ferrocenyl substituent lengthens C–O bonds at the α position provided that the C–O bond is antiperiplanar with respect to the C–Fe bond, these structural effects parallel the known sol

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fff974b2e948d993ed14e3647a9f0f13
https://doi.org/10.1039/a801652f

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