Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Sean H. Wiedemann"'
Publikováno v:
Organic Letters. 10:1661-1664
A new catalytic aldol-type addition of cyclopropanecarboximides to aldehydes via iodide-mediated ring-opening is presented. The reaction was found to be catalyzed at 0 degrees C using either a Sc(OTf)3/NaI system or ScI3. Stereoselective formation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fdead2c542d823ab489ed0067aeb23d3
https://doi.org/10.1021/ol800401g
https://doi.org/10.1021/ol800401g
Autor:
Shinji Harada, Akitake Yamaguchi, Shigeki Matsunaga, Hiroyuki Morimoto, Zhihua Chen, Masakatsu Shibasaki, Sean H. Wiedemann
Publikováno v:
Angewandte Chemie International Edition. 45:3146-3150
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::044e36af136773447344acb5ab9388ac
https://doi.org/10.1002/anie.200600227
https://doi.org/10.1002/anie.200600227
Publikováno v:
Journal of the American Chemical Society. 128:2452-2462
Evidence is presented for a proposed mechanism of C-H activation of 3-methyl-3,4-dihydroquinazoline (1) by (PCy(3))(2)RhCl. One intermediate (3), a coordination complex of 1 with (PCy(3))(2)RhCl, was identified along the path to the Rh-N-heterocyclic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bad4e5207fbdbcbf8d974f35be3ccbfc
https://doi.org/10.1021/ja0576684
https://doi.org/10.1021/ja0576684
Publikováno v:
Organic Letters. 6:35-38
[reaction: see text] A new method for the rhodium-catalyzed arylation of a variety of heterocycles has been developed. The reaction provided moderate to good yields of the arylated products. A preliminary mechanistic investigation of this reaction re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cdd4611861b32c8dcc85b3c9d703fd34
https://doi.org/10.1021/ol035985e
https://doi.org/10.1021/ol035985e
Publikováno v:
Organic Letters. 6:1685-1687
A new method for the preparation of 2-substituted oxazolines by rhodium-catalyzed coupling of alkenes with 4,4-dimethyl-2-oxazoline is reported. The oxazoline products are obtained in good yield with excellent selectivity for the linear product. A va
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::010fe0388f6b7934b8e5bb44ec6d024b
https://doi.org/10.1021/ol049417q
https://doi.org/10.1021/ol049417q
Publikováno v:
ChemInform. 40
Stereoselective synthesis of functionalized pyrrolidines with all-carbon quaternary stereocenters is described. DyI3 catalyzed the ring opening of cyclopropanecarboxylate equivalents and promoted M...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8673359fd93fcf9489343f16727b8b0a
https://doi.org/10.1002/chin.200915107
https://doi.org/10.1002/chin.200915107
Publikováno v:
ChemInform. 39
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec5ad4b42d8b014edfb6c61cb0b52f04
https://doi.org/10.1002/chin.200836115
https://doi.org/10.1002/chin.200836115
Autor:
Chulbom Lee, Sean H. Wiedemann
Publikováno v:
Metal Vinylidenes and Allenylidenes in Catalysis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::920f558cba1c01f348cb6c5432336d3a
https://doi.org/10.1002/9783527622870.ch9
https://doi.org/10.1002/9783527622870.ch9
Publikováno v:
Journal of the American Chemical Society. 129(15)
Rearrangement reactions of C4-alkoxides on O-covered Mo(110) have been studied using temperature-programmed reaction spectroscopy and reflection-absorption infrared spectroscopy. Cyclobutoxide on Mo(110), prepared from the corresponding alcohol or br
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48e71db66bb3dd25b9e8dddf5dcb70db
https://pubmed.ncbi.nlm.nih.gov/17375922
https://pubmed.ncbi.nlm.nih.gov/17375922
Publikováno v:
The Journal of organic chemistry. 71(5)
The inter- and intramolecular couplings of unactivated alkenes to 3,4-dihydroquinazolines with a Rh(I) catalyst are reported. Coupling between olefins and NH-3,4-dihydroquinazoline was found to occur consecutively with heterocycle dehydrogenation in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2f3c53a4ce1bbacebd7c60114791397
https://pubmed.ncbi.nlm.nih.gov/16496982
https://pubmed.ncbi.nlm.nih.gov/16496982