Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Kasim Agbaria"'
Publikováno v:
The Journal of Organic Chemistry. 67:6136-6142
Reaction of the calixarene derivative 7 with two exocyclic double bonds with carbon-, nitrogen-, oxygen-, or sulfur-containing nucleophiles afforded bis(spirodienone) derivatives substituted at two opposite methylene groups in a trans fashion. LiAlH(
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a3be959c2320306f1728f4c478e618b
https://doi.org/10.1021/jo025949d
https://doi.org/10.1021/jo025949d
Autor:
Kasim Agbaria, Silvio E. Biali
Publikováno v:
Journal of the American Chemical Society. 123:12495-12503
A new method for the regio- and stereoselective functionalization of two distal methylene groups of p-tert-butylcalixarene (1a) is described. Reaction of the meso bis(spirodienone) calixarene derivative 2a with bromine afforded the tetrabrominated pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06edc81eb4752dbce76a76b7289bda87
https://doi.org/10.1021/ja0117480
https://doi.org/10.1021/ja0117480
Autor:
Shmuel Cohen, Michael Frings, Kasim Agbaria, Iris Thondorf, Silvio E. Biali, Jörg Brenn, Jack McB. Harrowfield, Volker Böhmer, Flavio Grynszpan, and Alexander N. Sobolev
Publikováno v:
The Journal of Organic Chemistry. 66:2900-2906
The stereochemistry of the spherand-type calixarene 2a is analyzed in terms of the configuration of the three 2,2'-dihydroxybiphenyl subunits (R or S) and the disposition of the methylene groups (crown or twist). X-ray crystallography indicates that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca111314f4d02aef13af6da3eeed330f
https://doi.org/10.1021/jo0016576
https://doi.org/10.1021/jo0016576
Autor:
Alexander N. Sobolev, Kasim Agbaria, Michael Frings, Shmuel Cohen, Iris Thondorf, Volker Boehmer, Joerg Brenn, Flavio Grynszpan, Jack McB. Harrowfield, Silvio E. Biali
Publikováno v:
ChemInform. 32
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35b41aedaf9bf2ffb7845963f6722555
https://doi.org/10.1002/chin.200134092
https://doi.org/10.1002/chin.200134092
Publikováno v:
ChemInform. 32
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a079fd5d8f120c53235c3cde2d286827
https://doi.org/10.1002/chin.200134091
https://doi.org/10.1002/chin.200134091
Autor:
Silvio E. Biali, Kasim Agbaria
Publikováno v:
ChemInform. 32
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2a2ac0d9e64eb96edd4603e256fbac2
https://doi.org/10.1002/chin.200145084
https://doi.org/10.1002/chin.200145084
Publikováno v:
ChemInform. 34
Reaction of the calixarene derivative 7 with two exocyclic double bonds with carbon-, nitrogen-, oxygen-, or sulfur-containing nucleophiles afforded bis(spirodienone) derivatives substituted at two opposite methylene groups in a trans fashion. LiAlH4
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08ffac4605bfcaea4064aca62c0e7dd7
https://doi.org/10.1002/chin.200305063
https://doi.org/10.1002/chin.200305063
Autor:
Kasim Agbaria, Silvio E. Biali
Publikováno v:
The Journal of organic chemistry. 66(16)
The formal dehydration of two vicinal phenol moieties of p-tert-butylcalix[6]arene was achieved in two steps by mild oxidation of the calixarene followed by treatment of the resulting monospirodienone derivative (9c) with an ionic hydrogenation mixtu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37f1d9072d2986799f67878696f8b658
https://pubmed.ncbi.nlm.nih.gov/11485472
https://pubmed.ncbi.nlm.nih.gov/11485472
Autor:
Kasim Agbaria, Iris Thondorf, Volker Böhmer, and Michael Frings, Silvio E. Biali, Oleg Aleksiuk
Publikováno v:
The Journal of organic chemistry. 66(9)
Oxidation of the spherand-type calixarene 4 with 1 or 2 equiv of phenyltrimethylammonium tribromide/base afforded mono- and bis(spirodienone) derivatives (8b and 9, respectively). The spirodienone groups are derived from the oxidation of two phenols
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3d2bcef322f090bf339748e603cbc8a
https://pubmed.ncbi.nlm.nih.gov/11325250
https://pubmed.ncbi.nlm.nih.gov/11325250
Publikováno v:
New Journal of Chemistry. 27:236
The disubstituted calixarene syn-2 adopts in the crystal the unusual 1,3-alternate conformation but this conformation is not the lowest in energy of the isolated molecule in the gas phase.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c92731404c9c7c0a144acc5478ea0872
https://doi.org/10.1039/b207533d
https://doi.org/10.1039/b207533d