Zobrazeno 1 - 10
of 355
pro vyhledávání: '"Michael, Harmata"'
Publikováno v:
Organic Letters. 24:3521-3525
Easily prepared cycloadducts derived from the (4+3) cycloaddition of oxidopyridinium ions with dienes reacted intramolecularly in a [2+2] cycloaddition process to afford complex polycyclic species in which the tropane skeleton was embedded.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9cdc85e6061a4bb476406545b03f86c2
https://doi.org/10.1021/acs.orglett.2c01228
https://doi.org/10.1021/acs.orglett.2c01228
Autor:
Heather Wang, Jinchu Liu, Ras Baizureen Roseli, Erik L. Regalado, Angus B. Keto, Wanna Sungnoi, Elizabeth H. Krenske, Chencheng Fu, Michael Harmata
Publikováno v:
Organic Letters. 23:8302-8306
The (4 + 3) cycloaddition of 2-trialkylsilyl-4-alkylbutadienes with an N-methyloxidopyridinium ion affords cycloadducts with high regioselectivity and excellent endo selectivity.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c46735c61b663310bdfbde1c28863ef5
https://doi.org/10.1021/acs.orglett.1c03028
https://doi.org/10.1021/acs.orglett.1c03028
Autor:
Michael Harmata, Wanna Sungnoi
Publikováno v:
RSC advances. 12(44)
Selected azabicyclo[4.3.1]deca-3,8-dienes react with NIS in HFIP to form bridgehead ethers via a net oxidative C–H activation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9995832dbce1994764c791acd05a4be2
https://pubmed.ncbi.nlm.nih.gov/36320531
https://pubmed.ncbi.nlm.nih.gov/36320531
Publikováno v:
Organicbiomolecular chemistry. 20(33)
The ABCE tetracyclic ring system of daphnicyclidin A was prepared using an intramolecular (4 + 3) cycloaddition of an oxidopyridinium ion as the key step. This route consists of a 10-step synthesis with an overall yield of 20.2%. This result offers s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::541d56b074e443685d04b953ebc6963b
https://pubmed.ncbi.nlm.nih.gov/35920311
https://pubmed.ncbi.nlm.nih.gov/35920311
Publikováno v:
Chemistry – A European Journal. 28
N-alkylation of 5-hydroxynicotinic acid esters with electrophiles containing diene functionality produces salts that undergo intramolecular (4+3) cycloaddition reactions upon heating in the presence of base. Initial studies used a three-carbon tether
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48b1cb964bf6b9d2387792274f385b37
https://doi.org/10.1002/chem.202200370
https://doi.org/10.1002/chem.202200370
Publikováno v:
Magnetic Resonance in Chemistry. 60:80-85
Nuclear magnetic resonance (NMR)-based screening of materials is a powerful tool for quality control, authenticity testing, and purity testing of compounds. However, reliance on 3-(trimethylsilyl)-propane-1-sulfonate (DSS) and 3-(trimethylsilyl)propa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e1b84d17399470eedcb17dd4958cac2
https://doi.org/10.1002/mrc.5180
https://doi.org/10.1002/mrc.5180
Autor:
Aswin Garimalla, Michael Harmata
Publikováno v:
Tetrahedron
Derivatives of 2,1-benzothiazines are useful synthetic intermediates for a variety of applications. We became interested in developing a one-pot procedure to S-2-halophenyl-2,1-benzothiazines as potential precursors to P,N type ligands for metals. Ac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79b516fcf8318781333a7d839846cb43
https://pubmed.ncbi.nlm.nih.gov/35382242
https://pubmed.ncbi.nlm.nih.gov/35382242
Autor:
Stuart Winikoff, Sami Dawaigher, Anna Cederbalk, Michael Harmata, Emil Lindbäck, Daniel Strand, Victor Snieckus, Kenneth Wärnmark
Publikováno v:
Arkivoc. 2020:67-81
An efficient synthetic route to the mono-endo-6- and bis-endo,endo-6,12-N,N-diethylcarbamoyl derivatives of Troger’s base (TB), endo-7 and endo-8, is reported. Studies of reaction time, proton source, and additive allowed establishment of optimized
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e4feed5854f3317ed75c920c37e9190
https://doi.org/10.24820/ark.5550190.p011.183
https://doi.org/10.24820/ark.5550190.p011.183
Publikováno v:
ARKIVOC, Vol 2012, Iss 6, Pp 119-128 (2012)
Externí odkaz:
https://doaj.org/article/7dc8c9fe925b432bb703bde54380bacc
Autor:
David Rotsch, Tom Brossard, Saadia Bihmidine, Weijiang Ying, Vikram Gaddam, Michael Harmata, J David Robertson, Michael Swyers, Silvia S Jurisson, David M Braun
Publikováno v:
PLoS ONE, Vol 10, Iss 5, p e0128989 (2015)
Sugars produced from photosynthesis in leaves are transported through the phloem tissues within veins and delivered to non-photosynthetic organs, such as roots, stems, flowers, and seeds, to support their growth and/or storage of carbohydrates. Howev
Externí odkaz:
https://doaj.org/article/64a569a7497743b2a72f76e7efd5db4f