Zobrazeno 1 - 10
of 96
pro vyhledávání: '"Paul F. Hudrlik"'
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 71, Iss 7, Pp 772-775 (2015)
The title compound, 52-[(5-bromopentyl)oxy]-12,114,35,55-tetra-tert-butyl-17,18,19,110-tetrahydro-16H,116H-1(4,12)-dibenzo[b,e][1,7]dioxacyclododecina-3,5(1,3)-dibenzenacyclohexaphan-32-ol, C54H73BrO4, was synthesized from the reaction of tert-butylc
Externí odkaz:
https://doaj.org/article/70ee449454aa4c9a9bdce666a07ab028
Publikováno v:
Acta Crystallographica Section E, Vol 69, Iss 12, Pp o1792-o1793 (2013)
The title compound, C22H30BrNO, is an alkoxyamine compound, an effective initiator in nitroxide-mediated free radical polymerization. It was prepared as a mixture of two diasteromers; the crystal for the X-ray analysis showed one of these as a pair o
Externí odkaz:
https://doaj.org/article/93ca33272b1c4961a0f2402f12d9a7e0
Publikováno v:
Acta Crystallographica Section E, Vol 69, Iss 7, Pp o1001-o1002 (2013)
The reaction of tetrakis(allyloxy)calix[4]arene with the first-generation Grubbs catalyst, followed by catalytic hydrogenation, gave the novel bis-calixarene 15,20,46,51,64,69,74,79-octaoxatridecacyclo[32.28.8.83,28.113,53.122,44.09,14.021,26.038,70.
Externí odkaz:
https://doaj.org/article/f90fa6f6cceb442dabcc2cf42ed42026
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 6, Pp o1833-o1834 (2012)
A ring-closing olefin metathesis reaction of tetrakis(allyloxy)calix[4]arene gave the bis calixarene, (15E,40E,60E)-65,74-bis(prop-2-en-1-yloxy)-13,18,38,43,58,63-hexaoxadodecacyclo[28.26.8.720,36.111,45.151,55.05,57.07,12.019,24.026,64.032,37.044,49
Externí odkaz:
https://doaj.org/article/46896f116e5d4e9aaacb6276e8ea3b7a
Publikováno v:
Acta Crystallographica Section E, Vol 65, Iss 1, Pp o135-o135 (2009)
The title compound, C33H34O4Si, is a dioxasilepine compound, an effective chiral dopant for the determination of high helical twisting powers in liquid crystals. Its structure consists of a five-membered dioxolo ring fused to a seven-membered dioxasi
Externí odkaz:
https://doaj.org/article/abaa08738ea647b6a9c5dc29ef607e02
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications
Acta Crystallographica Section E: Crystallographic Communications, Vol 71, Iss 7, Pp 772-775 (2015)
Acta Crystallographica Section E: Crystallographic Communications, Vol 71, Iss 7, Pp 772-775 (2015)
The structure of the title compound, consists of a tert-butylcalix[4]arene with a five-carbon bridge connecting two proximal phenolic O atoms, and with a bromopentoxy chain on one of the remaining phenolic O atoms.
The title compound, 52-[
The title compound, 52-[
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ddd986e968e89739f78b8bb9b4af68aa
http://europepmc.org/articles/PMC4518971
http://europepmc.org/articles/PMC4518971
Publikováno v:
Journal of Molecular Structure. :271-281
Attempts to bridge a calix[4]arene with a three-carbon bridge using 1,3-dibromopropane and NaH/DMF led to elimination reactions. Using K2CO3/CH3CN, three new calixarenes were obtained: a biscalixarene (8), a novel bridged calixarene (9), and a partia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::215262639ae42aed5e540e1c77cd285a
https://doi.org/10.1016/j.molstruc.2013.09.040
https://doi.org/10.1016/j.molstruc.2013.09.040
Publikováno v:
Tetrahedron. 67:10089-10096
Substituted silyl ethers of o-bromobenzyl alcohols and the derived o-silylbenzyl alcohols were used to transfer allyl and benzyl groups from silicon to the electrophiles benzaldehyde and benzophenone in excellent yields. γ-Oxidosilane intermediates
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1e4463470e3002f4def449096730c5d
https://doi.org/10.1016/j.tet.2011.09.127
https://doi.org/10.1016/j.tet.2011.09.127
Publikováno v:
Synthesis. 2008:2968-2976
Calix[4]arenes having multiple silyl groups on the upper (wide) rim were prepared from the corresponding bromocalixarenes by halogen-metal exchange with t-BuLi followed by silylation. The best results were obtained using the clear supernatant from a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58568be1f7ccc8b0cff4c062f1ae3382
https://doi.org/10.1055/s-2008-1067250
https://doi.org/10.1055/s-2008-1067250
Publikováno v:
The Journal of Organic Chemistry. 72:8107-8110
The Wurtz-Fittig reaction of tetraiodo calixarene 3 with Na/Me3SiCl in DME gave a mixture of tetrakis- and tris-silylated calixarenes (6 and 7). Tris(silyl) calixarene 7 was assigned the flattened cone conformation. A model study using p-bromoanisole
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46b3315bd148fb7735308872c966fd0d
https://doi.org/10.1021/jo070660n
https://doi.org/10.1021/jo070660n