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Selenoxide

PhS-SPh will do similar chemistry however a sulfoxide elimination is less facile than a selenoxide elinimation. [Pg.20]

The 7 a-bromo steroid (9) can also be treated with sodium phenyl selenolate (41). The resultant 7 P-phenyl selenide (13) can be oxidized and the corresponding phenyl selenoxide elirninated to form the 7-dehydtocholesteryl ester (11). [Pg.127]

No oxidizing agent is required for the sulfuric acid promoted cyclization of iV,iV-diphenyl-hydroxylamine to carbazole (13CB3304). The parallel conversion of diphenyl sulfoxide and diphenyl selenoxide to dibenzothiophene (23CB2275) and dibenzoselenophene (39CR(199)53l) is effected by treatment with sodamide. [Pg.107]

A -methyl-5//,7//-dibenzo[d,.g][l,5]telluroazocine 65, its thiooxide 67a (X=S, R= Me) (95JA6388). The same type of reaction with benzylamine and sodium selenide gives A-benzyl-5//,7//-dibenzo[d,g][l,5]telluroazocine selenoxide 67b (X = Se, R = CH2Ph). Reaction of the tellurium dibromide 66 with sodium sulfide carried out in the absence of the primary amines affords the eight-member Te,S-containing heterocycle 5//,7//-dibenzo[d,g][l,5]telluroazocine (92CL151). [Pg.25]

The stmcture of the compound 67b was determined by X-ray (95JA6388). The length of the Te=Se bond (2.445 A) is 0.1 A shorter that in bis(2-ethylcarboxy-phenyltellurenyl) selenide (81CSC1353), which points to a greater double bond character of this bond in the former compound. Selenoxide 67b has a boat conformation. The length of the transannular Te- N bond (2.620 A) is appreciably shorter than the corresponding van der Waals contact (3.70 A). The intramolecular coordination Te- N bond thus formed contributes to the stabilization of the boat conformation of the compounds 67. [Pg.25]

Allylsilanes in which the silyl group is at the more substituted end of the allyl system have been prepared by a reaction sequence involving the conjugate addition of silylcuprates to a, jS-unsat-urated esters followed by reduction and dehydration via selenoxide elimination38. [Pg.345]

Selenosulphonylation 191, 194, 1107-1109 Selenoxides, as oxidizing agents 253 Self-termination, of radicals 1084, 1085,... [Pg.1204]

Sulfoxides (or selenoxides or telluroxides) and sulfones (or selenones or tellurones) may be named by functional class nomenclature [13]. [Pg.86]

Sulfonesand sulfonic esters can also be alkylated in the a position if strong enough bases are used. Alkylation at the a position of selenoxides allows the formation of alkenes, since selenoxides easily undergo elimination (17-11). [Pg.555]

Both the selenoxide and sulfoxide " reactions have been used in a method for the conversion of ketones, aldehydes, and carboxylic esters to their a, P-unsaturated derivatives (illustrated for the selenoxide). [Pg.1336]

Because of the mildness of the procedure, this is probably the best means of accomplishing this conversion. See page 555 for another application of the selenoxide reaction. Allylic sulfoxides undergo 1,4 elimination to give dienes. [Pg.1336]

Selenides (R2Se) can be oxidized to selenoxides and selenones. It is possible to oxidize a thioether to a sulfoxide in the presence of an alcohol moiety using MnOa/HCl. ... [Pg.1542]

Cleavage of carbonyl-containing selenoxides and sulfones Fragmentation of epoxy hydrazones Rearrangement of vinylic hydroxycyclopropanes Rearrangement of 3-hydroxy-1,5-dienes (oxy-Cope)... [Pg.1691]

Nishibayashi Y, Uemura S (2000) Selenoxide Elimination and [2,3] Sigmatropic Rearrangements. 208 201-233... [Pg.236]


See other pages where Selenoxide is mentioned: [Pg.109]    [Pg.22]    [Pg.333]    [Pg.634]    [Pg.59]    [Pg.497]    [Pg.217]    [Pg.339]    [Pg.411]    [Pg.412]    [Pg.519]    [Pg.221]    [Pg.221]    [Pg.253]    [Pg.253]    [Pg.740]    [Pg.921]    [Pg.87]    [Pg.1336]    [Pg.1336]    [Pg.1557]    [Pg.1650]    [Pg.1651]    [Pg.1686]    [Pg.1690]    [Pg.30]    [Pg.32]    [Pg.166]   
See also in sourсe #XX -- [ Pg.168 , Pg.367 ]

See also in sourсe #XX -- [ Pg.165 ]

See also in sourсe #XX -- [ Pg.573 ]

See also in sourсe #XX -- [ Pg.26 ]

See also in sourсe #XX -- [ Pg.34 ]

See also in sourсe #XX -- [ Pg.166 ]

See also in sourсe #XX -- [ Pg.126 ]

See also in sourсe #XX -- [ Pg.497 ]

See also in sourсe #XX -- [ Pg.49 , Pg.65 ]

See also in sourсe #XX -- [ Pg.186 ]

See also in sourсe #XX -- [ Pg.903 ]




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2:4- „ selenophene selenoxide

A-Lithio selenoxides

Acetal selenoxide

Alkenes from selenoxides

Alkyl phenyl selenoxides

Alkyl phenyl selenoxides, oxidants

Alkylaryl selenoxides

Allyl selenoxide elimination

Allylic aryl-selenoxides

Allylic selenoxide [2,31-rearrangements

Allylic selenoxide [2,31-rearrangements transition state

By elimination of selenoxides

Diphenyl selenoxide

Elimination reactions phenyl selenoxides

Elimination reactions selenoxide

Elimination reactions selenoxides

Epoxidation from selenoxides

Esters, unsaturated selenoxides

Ferrocenyl selenoxides

From selenoxides

Methionine selenoxide

Methyl phenyl selenoxide

Oxidation to selenoxides

Reactions of Saturated Sulphoxides and Selenoxides

Reactions of Unsaturated Sulphoxides and Selenoxides

Rearrangement of Allylic Sulfoxides. Selenoxides and Amine Oxides

Rearrangement reactions selenoxides

Rearrangements allylic selenoxides

Selenide - selenoxide oxidation

Selenides from selenoxides

Selenides to selenoxides

Selenium selenoxides

Selenones Selenoxides

Selenones from selenoxides

Selenonic acids to selenoxides

Selenoxide elimination

Selenoxide elimination chemistry

Selenoxide elimination choice of reagent

Selenoxide fragmentation

Selenoxide pyrolysis

Selenoxide syn-elimination

Selenoxide thermal decomposition

Selenoxide, 2-azidocyclohexyl phenyl

Selenoxide, 2-azidocyclohexyl phenyl synthesis

Selenoxide, Pummerer rearrangement

Selenoxide, benzyl phenyl

Selenoxide, benzyl phenyl synthesis

Selenoxide, dimethyl

Selenoxide, methyl phenyl synthesis

Selenoxide-based elimination

Selenoxide-mediated elimination

Selenoxides

Selenoxides

Selenoxides Shapiro reaction

Selenoxides Sharpless asymmetric

Selenoxides acid, reduction with

Selenoxides alcohol synthesis

Selenoxides alkylation

Selenoxides allylic, -sigmatropic rearrangement

Selenoxides carbonyl compounds

Selenoxides chiral

Selenoxides compounds

Selenoxides cyclization

Selenoxides dialkyl

Selenoxides dihydroxylation

Selenoxides diphenyl selenoxide

Selenoxides eliminations

Selenoxides enantioselectivity

Selenoxides fluoride

Selenoxides formation

Selenoxides in conversion of alkenes to allylic alcohols

Selenoxides in conversion of epoxides to allylic alcohols

Selenoxides ketones

Selenoxides metal complexes

Selenoxides metallation

Selenoxides oxidation

Selenoxides oxidation reactions

Selenoxides oxidations with

Selenoxides preparation from selenides

Selenoxides pyrolysis

Selenoxides reaction with aldehydes

Selenoxides reaction with ketones

Selenoxides rearrangement

Selenoxides reduction

Selenoxides selenides

Selenoxides selenium dioxide

Selenoxides sensitizers

Selenoxides shifts

Selenoxides sigmatropic rearrangements

Selenoxides silanes

Selenoxides syn-elimination

Selenoxides synthesis

Selenoxides thermal elimination

Selenoxides thermal elimination reactions

Selenoxides to selenones

Selenoxides, 0-oxidoalkyl

Selenoxides, a-metalloalkyl

Selenoxides, a-metalloalkyl reactions with carbonyl compounds

Selenoxides, a-metalloalkyl synthesis

Selenoxides, a-metalloalkyl via metallation

Selenoxides, a-metallovinyl

Selenoxides, a-metallovinyl reactions with carbonyl compounds

Selenoxides, a-metallovinyl synthesis

Selenoxides, alkyl

Selenoxides, alkyl alkylation

Selenoxides, alkylation alkenes

Selenoxides, allyl

Selenoxides, allyl rearrangement

Selenoxides, elimination reaction 1.5] -shifts

Selenoxides, vinyl

Selenoxides, vinyl reactions with organometallic compounds

Sharpless asymmetric epoxidation of allylic selenoxides

Sigmatropic rearrangements of allyl selenoxides

Sulfoxides, Sulfonium Salts and Selenoxides

Sulphoxides, Selenoxides, and Telluroxides

Syn elimination of selenoxide

Synthesis selenoxide

Thermal Elimination Reactions of Xanthates, N-Oxides, Sulfoxides, and Selenoxides

Unsaturated selenoxides, oxidation

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