2 edition of Functional group oxidations using sodium perborate and hypervalent iodine reagents. found in the catalog.
Functional group oxidations using sodium perborate and hypervalent iodine reagents.
Thesis (Ph.D.), University of East Anglia, School of Chemical Sciences, 1992.
“Further functional-group oxidations using sodium perborate,” Tetrahedron, , “Straightforward Syntheses of Hypervalent Iodine (III) Reagents Mediated by Selectfluor,” Org. Lett., , sodium perborate tetrahydrate was added gradually over an hour. The reaction mixture was kept at 40° C. for 8 S. D. Burke, R. L. Danheiser, (Eds.), “Handbook of Reagents for Organic Synthesis: Oxidizing and Reducing Agents,” Wiley, New York, Google Scholar
The facile and clean oxidative cross-coupling reaction of pyrroles has been developed using the recyclable hypervalent iodine(III) reagents having an adamantane core. The recyclable iodine(III) reagent could be recovered from the reaction mixtures as the corresponding reduced forms, i.e., the tetraiodide 2, by a simple solid-liquid Visible-Light, Iodine-Promoted Formation of N-Sulfonyl Imines and N-Alkylsulfonamides from Aldehydes and Hypervalent Iodine Reagents. Molecules , 23 (8), DOI: /molecules Jean Le Bras, Jacques ://
Reactions - Lesson 9 - Oxidations and Reductions - Introduction - This book explains the theories and examples of organic chemistry, providing the most comprehensive resource about organic chemistry available. Readers are guided on planning and execution of multi-step synthetic reactions, with detailed descriptions of all the reactions. The 7th edition proves again it is a must-have desktop Page 1 Professor Anastasios Varvoglis A Tribute Anastasios Varvoglis (Tassos) was born in Athens, Greece, on the last day of (Decem ). He studied chemistry at the University of Thessaloniki (). A part of his long military service (30 months) was spent at the Nuclear Research Center “Democritus”, in Athens, where he had his first three publications in radiochemistry ?rgn=main;view=fulltext.
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Christian Rocaboy and John A. Gladysz, Convenient Syntheses of Fluorous Aryl Iodides and Hypervalent Iodine Compounds: ArI(L)n Reagents that Are Recoverable by Simple Liquid/Liquid Biphase Workups, and Applications in Oxidations of Hydroquinones., ChemInform, 34, 19, () Functional group oxidations using sodium perborate and hypervalent iodine reagents.
Author: Koyuncu, Demet. ISNI: X Awarding Body: University of East Anglia Current Institution: University of East Anglia Date of Award: Availability of Full Text: ?uin= Unsuccessful reagents to oxidize the iodine atom in 22 include peracetic acid, sodium perborate and PhI(OCOCF 3) 2.
Oxidation with oxone led to compound 3 f in 86 % yield (Scheme 6), whereas treatment with PhI(OTf) 2 resulted in the formation of 23 probably via similar intermediates as described above. 19 Compound 2 f was, however, not :// The use of and λ 3 - and λ 5-iodanes in the oxidative dearomatization of phenols is a well-established and general procedure for the construction of cyclohexadienone r, their use in asymmetric dearomatization reactions is quite underdeveloped and, despite work by several research groups over the past several years, a general chiral aryl iodide catalyst has yet to :// Introduced by McKillop, sodium perborate (NaBO 3) is a mild, inexpensive, and air-stable oxidizing agent.
28 Due to its high affinity for water it is usually found in its dimeric monohydrated form, [NaBO 3 H 2 O] 2, which is more accurately represented as the disodium salt of the 1,4-diboratetroxane dianion (Scheme 14).SPB selectively oxidizes C–B bonds to C–O bonds, thus avoiding Results and Discussion.
Herein, we report a novel oxidative rearrangement of 4-arylbutenoic acids to 4-arylfuran-2(5H)-ones mediated by hypervalent iodine compounds in high yields under mild reaction l reagents reaction conditions were established using 4,4-diphenylbutenoic acid (1 a) as model substrate. 7 The rearrangement of 1 a to 4,5-diphenylfuran-2(5H)-one (2 a) was Doktora, Functional group oxidations using sodium perborate and hypervalent iodine reagents, University Of East Anglia, Yüksek Lisans, Ege Bölgesi meyan kötü flavonoidlerini incelenmesi, Ege Üniversitesi, Fen Fakültesi, Kimya Bölümü, Araştırma Alanları Kimya, Organik Kimya, Aromatik Bileşikler Kimyası, Temel Bilimler Hypervalent iodine(Ⅲ) reagents have been vastly used in many useful organic transformations.
In this review article, we highlight the strategies that used the common hypervalent iodine(Ⅲ) reagents as oxidants to synthesize the heterocyclic compounds, based on the patterns of bond formation during the construction of the heterocyclic Reaction of phIOHBF4/silyl enol ether adduct with olefins as general approach to carbon—carbon bond formation in AdE reactions using hypervalent iodine reagents.
Tetrahedron Letters29 (30), DOI: /S(00) Hypervalent iodine reagents exhibit attractive features of low cost, low toxicity and are environmentally benign. 1 Their highly electrophilic nature 2 coupled with the ability of the aryliodine(III) moiety to act as an excellent leaving group have seen their employment as much safer alternatives to more toxic heavy metal‐based oxidants, such Polymer-supported hypervalent iodine reagents, bearing (diacetoxy)iodo, (dihalo)iodo, (hydroxy)(tosyloxy)iodo, (hydroxy)(phosphoryloxy)iodo, aryliodonium, 1,2-benziodoxolone, and hypervalent Biaryls (two directly connected aromatic rings, Ar1-Ar2) are common motifs in pharmaceuticals, agrochemicals, and organic materials.
Current methods for establishing the Ar1-Ar2 bond are dominated by the cross-coupling of aryl halides (Ar1-X) with aryl metallics (Ar2-M). We report that, in the presence of 1 to 2 mole percent of a gold catalyst and a mild oxidant, a wide range of arenes (Ar1-H This lecture shows our small group’s main interest in developing novel (or considerably improved) preparative procedures, which are suitable for easy, quick, cheap, and possibly enviromentally benign preparations of iodoarenes and some basic aromatic hypervalent iodine reagents: ArICl 2, ArI(OAc) 2, ArI(OCOCF 3) 2, ArIO 2, and diaryliodonium Transition metal‐catalyzed functionalizations and heterocycle formations with hypervalent iodine reagents are discussed.
Further functional group oxidations using sodium perborate hypervalent iodine reagents, but they rather react to give 1,4-iodonium dipoles or iodonium salts. O O I-Ph + BTI Chloroform CF3-COO-Upon reaction with BTI, 4-alkoxy-phenol ethers can be converted oxidatively by various nuleophiles into 2-substituted derivatives.
Such reactions are oxidations proceeding through radical This review reports some novel (or considerably improved) methods for the synthesis of aromatic iodides, (dichloroiodo)arenes, (diacetoxyiodo)arenes, iodylarenes and diaryliodonium salts, as well as some facile, oxidative anion metatheses in crude diaryliodonium halides and, for comparison, potassium halides.
All these new results were obtained in our laboratory over the past decade (). Sodium perborate and sodium Oxidation of substituted pyridines PyrCHRSiMe3 (R=H, Me, Ph) and substituted quinolines QnCH2SiMe3 with hypervalent iodine reagents Heterocycles. Geen GR, Mann IS Further functional group oxidations using sodium perborate Tetrahedron.
DOI: /S(01 ?pid= Page 1 Special Issue Reviews and Accounts ARKIVOC (i) Hypervalent iodine(III) reagents in organic synthesis Viktor V. Zhdankin Department of Chemistry and Biochemistry, University of Minnesota Duluth, Duluth, MinnesotaUSA E-mail: [email protected] Abstract This review summarizes the chemistry of hypervalent iodine(III) compounds with emphasis of their synthetic ?rgn=main;view=fulltext.
McKillop et ai., "Further functional-group oxidations using sodium perborate," Tetrahedron,Moore et ai., "Hypervalent iodine-promoted phenolic oxidations: Generation of a highly versatile o-quinone template," Cherntracts,?article=&context=chemfacpub.
Conclusions, lecture shows our small group’s main interest in developing novel (or considerably improved) preparative procedures, which are suitable for easy, quick, cheap, and possibly enviromentally benign preparations of iodoarenes and some basic aromatic hypervalent iodine reagents: ArICl2, ArI(OAc)2, ArI(OCOCF3)2, ArIO2, and.
functional group compatibilities.8) During this period, the concept of “green chemistry” that stresses the toxicity of reagents, safety and efﬁciency of processes, etc., became im-Recycling and Catalytic Approaches for the Development of a Rare-Metal-Free Synthetic Method Using Hypervalent Iodine Reagent Toshifumi DOHI Synthesis of Benzoxazoles Using Electrochemically Generated Hypervalent The unique reactivity of hypervalent iodine reagents with Pd0 and PdII complexes has been exploited for a variety of synthetically useful organic transformations.
For example, IIII reagents have been used in place of aryl halides for diverse Pd-catalyzed C−C and C−heteroatom bond-forming cross-coupling reactions.
In addition, these reagents have found application in Pd-catalyzed oxidation