Fluorination of steroid estrogens with Selectfluor??: Elucidation of regio- and stereoselectivity
Two steroid estrogens, natural estradiol and 8?±-estradiol, were fluorinated using Selectfluor?? in ionic liquid. Unexpectedly, mostly products of fluorination at position C-10 were isolated instead of corresponding fluorophenols, as it was reported previ
Bogautdinov, Roman P.,Fidarov, Alan F.,Morozkina, Svetlana N.,Zolotarev, Andrei A.,Starova, Galina L.,Selivanov, Stanislav I.,Shavva, Alexander G.
p. 218 - 222
(2015/03/05)
Fluorination of activated aromatic systems with Selectfluor F-TEDA-BF4 in ionic liquids
Selectfluor was shown to be soluble in ionic liquid, thus allowing the 'green' electrophilic fluorination of activated aromatic systems compounds in high chemoselectivity and yields.
Heravi, Mohammad Reza Poor
p. 217 - 221
(2008/09/17)
Direct Fluorination of Biologically Interesting Compounds Using N-Fluoro-3,5-Dichloropyridinium Triflate
N-fluoro-3,5-dichloropyridinium triflate was used for the direct fluorination of biologically important aromatic compounds.
Hebel, David,Kirk, Kenneth L.
p. 179 - 183
(2007/10/02)
Efficient regioselective a-ring functionalization of oestrogens
Complete series of 2-halo- and 2-cyano-oestrogens have been prepared in good to high yields: 2-chloro, 2-bromo, 2-iodo, and 2-cyano derivatives via oestrogen-thallium (III) bis(trifluoroacetate) intermediates, and 2- and 4- fluorooestrogens by direct functionalization using N-fluoropyridinium triflate.
Bulman Page, Philip C.,Hussain, Fazal,Maggs Paul Morgan, James L.,Kevin Park
p. 2059 - 2068
(2007/10/02)
Fluorination of Activated Aromatic Systems with Cesium Fluoroxysulfate
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Patrick, Timothy B.,Darling, Diana L.
p. 3242 - 3244
(2007/10/02)
Synthesis of 4-Fluoroestradiol Analogues
The synthesis of several 4-fluoro analogues of estradiol is described.
Njar, Vincent C. O.,Arunachalam, Thangavel,Caspi, Eliahu
p. 1007 - 1011
(2007/10/02)
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