Zobrazeno 1 - 10
of 1 397
pro vyhledávání: '"H. R. Barton"'
Autor:
Derek H R Barton
This book is about the recognition of new principles in Organic Chemistry. It is also about the discovery and invention of Chemical Reactions. In addition, it deals with the determination of structure by chemical degradation during the epoch when phy
Autor:
Mireille Le Hyaric, Joseph Cs. Jaszberenyi, Tetsuro Shinada, Wansheng Liu, Mauro V. De Almeida, Hélio F. Dos Santos, Derek H. R. Barton
Publikováno v:
Tetrahedron. 57:8767-8771
d -glucono 1,5-lactone was converted to O-protected d -gluconic acids. The latter were transformed to gluco-KDO derivatives using Barton ester-based radical chemistry with high diastereoselectivity.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48920531fb2e28df3912de5349b88685
https://doi.org/10.1016/s0040-4020(01)00865-1
https://doi.org/10.1016/s0040-4020(01)00865-1
Publikováno v:
Tetrahedron Letters. 40:9201-9204
A simple water soluble diselenide derivative 1 shows radical scavenger properties towards alkyl and hydroxyl radicals (k3 (0°C)=6.8×108 M−1 s−1) in Fenton-type chemistry. The reaction rate between produceded alkyl radicals 2 and the diselenide
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b3a21655867ade42d08f7d840b20b3a
https://doi.org/10.1016/s0040-4039(99)01973-5
https://doi.org/10.1016/s0040-4039(99)01973-5
Autor:
Jason A. Smith, Steven R. Merrigan, Derek H. R. Barton, Daniel A. Singleton, Valérie N. Le Gloahec
Publikováno v:
Tetrahedron Letters. 40:3847-3850
A method is reported for the determination of both the primary and secondary kinetic isotope effects at a reactive center based on staring material reactivities. This allows the determination of the separate KIEs in reactions for which neither produc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e111b53ac09a4cbf1248ce0120482c00
https://doi.org/10.1016/s0040-4039(99)00637-1
https://doi.org/10.1016/s0040-4039(99)00637-1
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 9:1175-1178
A stable sulfone derivative of 2,4,6-trimethylcyclohexa-2,4-diene-1-one (7) undergoes facile ring cleavage under visible light to produce a ketene intermediate, which could be efficiently captured by amines to give amides even in the presence of comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c46449ec5d9f229cfe1f6e1d3e080fe1
https://doi.org/10.1016/s0960-894x(99)00153-5
https://doi.org/10.1016/s0960-894x(99)00153-5
Publikováno v:
Tetrahedron. 54:15087-15096
In the FeIII-FeV manifold the formation of the iron-carbon bond was found to be very fast, but the evolution to give ketone was slow at −20 °C and −40 °C. However, the efficiency at the latter temperature was good. The iron-carbon bond can be c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef89d37730c8a2f1b87fb170a9feb30c
https://doi.org/10.1016/s0040-4020(98)00907-7
https://doi.org/10.1016/s0040-4020(98)00907-7
Publikováno v:
Tetrahedron Letters. 39:7483-7486
The reaction of 2,2,6,6-tetramethylpiperidinyloxy (TEMPO) with t-butyl hydroperoxide, in the presence of catalytic amounts of FeIII yields oxygen. This reaction, which has never been described in the literature so far, led us to envisage a totally ne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::baed04c2f5df5e0919cad05f50d498ab
https://doi.org/10.1016/s0040-4039(98)01628-1
https://doi.org/10.1016/s0040-4039(98)01628-1
Autor:
Franck Launay, Derek H. R. Barton
Publikováno v:
Tetrahedron. 54:12699-12706
Competition experiments between cyclohexane and various aromatic substrates have been carried out in pyridine-acetonitrile in order to ascertain the steric requirements of the FeII-H2O2 reagent in comparison with the FeIII-H2O2 reagent already studie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c87a260b7b528a82b1c7c99ed195b8b
https://doi.org/10.1016/s0040-4020(98)00785-6
https://doi.org/10.1016/s0040-4020(98)00785-6
Publikováno v:
Journal of Labelled Compounds and Radiopharmaceuticals. 41:871-878
A novel procedure for the synthesis of labelled imines and aldazines, using a Bu3P catalyzed decarboxylation, is described. © 1998 John Wiley & Sons, Ltd.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::56ac29d41ed161e77d44a8507c3003eb
https://doi.org/10.1002/(sici)1099-1344(1998090)41:9<871::aid-jlcr144>3.0.co
https://doi.org/10.1002/(sici)1099-1344(1998090)41:9<871::aid-jlcr144>3.0.co
Publikováno v:
Tetrahedron Letters. 39:7055-7058
The binuclear MnIVMnIV manganese complex 1 catalyzes the periodic acid oxidation of sulfides to sulfones under mild conditions. The reaction was found to be highly selective giving almost quantitative yields of the sulfones even in the presence ot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae2fec0d874732c4f186942fdcb76bfb
https://doi.org/10.1016/s0040-4039(98)01518-4
https://doi.org/10.1016/s0040-4039(98)01518-4