Zobrazeno 1 - 10
of 102
pro vyhledávání: '"Douglas N. Butler"'
Publikováno v:
ARKIVOC, Vol 2002, Iss 6, Pp 234-256 (2002)
Externí odkaz:
https://doaj.org/article/d3ad854e0a2b4cf5a1616a62562536e2
Publikováno v:
ARKIVOC, Vol 2001, Iss 12, Pp 27-34 (2001)
Externí odkaz:
https://doaj.org/article/7e0dfa36dad148c991ac54d7950cc999
Publikováno v:
Journal of Heterocyclic Chemistry. 52:1447-1456
Dipolar cycloaddition of polycyclic azomethine ylides, in which the central nitrogen atom is part of a pyrrolidine ring and bears a methoxycarbonyl group with norbornenes has been shown to produce two main types of products featuring pyrrolizidine ri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aacf4a49d225a47f9c55e96065ca2517
https://doi.org/10.1002/jhet.2167
https://doi.org/10.1002/jhet.2167
Publikováno v:
Journal of Heterocyclic Chemistry. 52:1195-1200
The structural motif C(NR2)4 is rare in chemistry. The formation, NMR spectroscopic characteristics, and X-ray structure are reported for a structurally interesting member of this family, namely tetrakis-(N-pyrrolyl)methane.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e06bbc83ff77c6bd483fadf630b0297
https://doi.org/10.1002/jhet.2233
https://doi.org/10.1002/jhet.2233
Publikováno v:
Synthesis. 45:3413-3425
A series of polyaromatic hydrocarbons (PAHs) or their aza derivatives were reacted as dipolarophiles with ring-fused cyclobutene epoxides (CEs) in the 1, 3-dipolar cycloaddition protocol to form 1:1 cycloadducts. The dihydroforms of the PAH chromopho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::19e415dd4b6c616ef911214985349cbe
https://doi.org/10.1055/s-0033-1340305
https://doi.org/10.1055/s-0033-1340305
Publikováno v:
Synlett. 24:2609-2613
Norbornadiene cycloadducts reacted with 3,6-di(2-pyridyl)-s-tetrazine to produce pyridazines (diene-protected alkenes), following dehydrogenation (by DDQ) of the intermediate dihydropyridazines. The title 3,6-di(2-pyridyl)-pyridazinonorbornadiene was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6c9c1de164711219f505b6eec0a3f8c
https://doi.org/10.1055/s-0033-1339879
https://doi.org/10.1055/s-0033-1339879
Publikováno v:
Tetrahedron. 67:1580-1588
Flash vacuum pyrolysis (FVP) has been used to generate the novel 7-oxa-norbornadiene-2,3-dicarboxylic imide that in situ gave an unprecedented cycloaddition reaction cascade with the imidofuran, a side-product of FVP. Stereoselectivity of cycloadditi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6397a26a3900f477d76601445f6adbcb
https://doi.org/10.1016/j.tet.2010.12.032
https://doi.org/10.1016/j.tet.2010.12.032
Autor:
Zemin Dong, Ronald N. Warrener, David L. Officer, Hesheng Tang, Zul Merican, Maxwell J. Gunter, Davor Margetić, Douglas N. Butler, Željko Marinić
Publikováno v:
Tetrahedron Letters. 50:667-670
Norbornene building BLOCKs formed by the reaction of porphyrin 1,3-dienes with norbornadiene or dimethyl tricyclo[4.2.1.0 2,5 ]nona-2,7-diene-3,4-dicarboxylate were coupled with an ester-activated cyclobutene epoxide BLOCK to afford the first example
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ab2b10405c0f81e0ea782e611c37cb8
https://doi.org/10.1016/j.tetlet.2008.11.109
https://doi.org/10.1016/j.tetlet.2008.11.109
Publikováno v:
Tetrahedron. 63:4338-4346
Four new substituted methano-bridged or heteroatom-bridged norbornadienomaleic anhydrides have been prepared and converted to sesquinorbornadiene anhydrides by reaction with cyclic 1,3-dienes. The versatility of parity reversal, in conjunction with N
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a67f81a426a110eade999c6d1c26db6
https://doi.org/10.1016/j.tet.2007.03.009
https://doi.org/10.1016/j.tet.2007.03.009
Publikováno v:
Tetrahedron Letters. 54:5335-5337
The thermal rearrangement of [3]polynorbornane bis - imide rack-mounted 7-oxabenzonorbornadienes has been conducted using flash vacuum pyrolysis (FVP) at 520 °C and is compared with the FVP of similar 7-oxabenzonorbornadienes off the rack. The isome
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a8c60bfce944102390d5af9764eca53
https://doi.org/10.1016/j.tetlet.2013.07.105
https://doi.org/10.1016/j.tetlet.2013.07.105