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1-Benzothiophen

Few 1 -benzothiophene-S-oxides 218 were obtained in moderate yields by treatment of 1-arylacetylenes 219 with sulfur dioxide and benzene in the presence of antimony pentafluoride250 (equation 127). A series of cyclic sulphoxides have been prepared by hydrolysis of the corresponding alkoxy sulphonium salts 220251-254 (equation 128). Syn-sulphoxide 221 was obtained in a low yield (15-20%) in the reaction of the dianion of cyclooctatetraene 222 with thionyl chloride255 (equation 129). [Pg.284]

On converting 1-benzothiophene into 1-phenyl-1-benzothiophenium triflate (95), this salt becomes a dienophile and reacts readily with cyclopentadiene or 1,3-diphenylisobenzofuran to give the adduct 96 (Scheme 45).143 This example of the dienophilic nature of the double bond in the benzothiophene ring arises from reduced aromaticity. [Pg.20]

Dimethoxyphenyl)prop-2-ynoic acid reacted with sulfur monochloride in the presence of pyridine to give low yields of substituted 1-benzothiophenes 17 and 18 (1979AJC833 Scheme 9). [Pg.179]

R-hT coochj HS-CH2-COOCH / DMF LiOH r CjO cooch3 2-Metboxycarbonyl-1 -benzothiophene 50-85 2 (s.a. E6)... [Pg.396]

Die Umwandlung von Phenolen in Anilin-Derivate gelingt durch O-Substitution (in zwei Stufen) zu 2-Aryloxy-2-methyl-propansaure-amiden, deren Smiles-Umlagerung mittels Natriumhydrid in Phosphorsaure-tris-[dimethylamid] zu 2-Hydroxy-2-methyl-propansau-re-arylamiden und saure Hydrolyse dieser Amide, wie hier fur die Synthese von 4-Amino-1-benzothiophen gezeigt2 ... [Pg.1154]

Group 1 - Benzothiophenes with no substituents in the 2- or 7-position Relative k = I 4... [Pg.365]

Arylations of weak organic nucleophiles are best achieved with iodonium salts possessing nucleofugic anions and, in some cases, can be facilitated with transition metal catalysts. Recent examples include Cu(II)-catalyzed S-phenyla-tions of 1-benzothiophenes with diphenyliodonium triflate [118], and Co(II)-catalyzed N-arylations of imidazoles with diaryliodonium tetrafluoroborates (Scheme 42) [119]. [Pg.154]

Benzoselenophene is generally more reactive toward electrophilic reagents, although, like 1-benzothiophene, it undergoes mainly p-substitution (Scheme 5). [Pg.295]

The 1-benzoselenophenes are relatively stable and easy to manipulate. Their synthesis has been extensively studied since some of them are analogs of naturally occurring biologically active 1-benzofurans, 1-benzothiophenes, and indoles [1,14, 118, 120],... [Pg.307]

Pentafluorophenyl propargyl ether isomerizes in the gas phase on silica gel at 370°C to give 2-monofluoromethyl-4,5,6,7-tetrafluorobenzo[6]-furan [81JCS(P1)1417]. Via the same route, naphtho[2,l-/ ]furans [82JCS(P1)107, 82JFC(20)173] and 4,5,6,7-tetrafluoro-2,3-dihydro-2-methyl-1-benzothiophene [81JCS(P1)1659] can be synthesized (Scheme 54). [Pg.28]

In an earlier investigation by Kim [1] benzothiophene derivatives, (I), were prepared and used as components in photochromic polymers. [Pg.531]


See other pages where 1-Benzothiophen is mentioned: [Pg.282]    [Pg.86]    [Pg.132]    [Pg.276]    [Pg.472]    [Pg.751]    [Pg.572]    [Pg.804]    [Pg.104]    [Pg.104]    [Pg.864]    [Pg.572]    [Pg.822]    [Pg.822]    [Pg.979]    [Pg.999]    [Pg.1098]    [Pg.1098]    [Pg.292]    [Pg.232]    [Pg.348]    [Pg.274]    [Pg.72]    [Pg.475]    [Pg.17]    [Pg.17]    [Pg.18]    [Pg.19]    [Pg.74]    [Pg.435]    [Pg.435]    [Pg.435]    [Pg.436]   


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1- Benzothiophenes, formation

1- benzothiophene-2-, lithium

2-Aryl benzothiophene derivatives

2-Benzothiophen-2,2-dioxid

2-substituted benzothiophenes

4- Amino-benzothiophene

4- Hydroxy-7- benzothiophene

5-substituted benzothiophene

6-Methoxy-2- benzothiophene

Addition to Sulfur in Benzothiophenes

Alkyl benzothiophenes

Annulation with thiophene (synthesis of benzothiophenes)

Aromaticities benzothiophene

Aryl-substituted benzothiophenes

Arylations benzothiophenes

BENZOTHIOPHENE.6(Vol

Benzocyclobutene via thermolysis of benzothiophene dioxides

Benzofuran and Benzothiophene

Benzothieno benzothiophene

Benzothieno benzothiophene synthesis

Benzothieno benzothiophenes

Benzothiophen S-Oxides

Benzothiophen and Dibenzothiophen

Benzothiophene

Benzothiophene

Benzothiophene (cont reactions

Benzothiophene 2,2-dioxides, 2,5-dihydrothermolysis benzocyclobutene synthesis

Benzothiophene 5- alkylation

Benzothiophene S -oxidation

Benzothiophene analogs

Benzothiophene analogues

Benzothiophene aromaticity

Benzothiophene carboxamides

Benzothiophene complexes

Benzothiophene coupling reactions

Benzothiophene derivatives

Benzothiophene derivatives, synthesis

Benzothiophene desulfurization

Benzothiophene electron-rich

Benzothiophene halogenation

Benzothiophene hydrogenation

Benzothiophene hydrogenation, homogeneous catalysts

Benzothiophene hydrogenolysis

Benzothiophene mechanisms

Benzothiophene methylation

Benzothiophene nitration

Benzothiophene nucleophilic substitution

Benzothiophene organic sulfur removal

Benzothiophene oxidation sulfoxide

Benzothiophene reactions

Benzothiophene reduction

Benzothiophene ring synthesis

Benzothiophene substrates

Benzothiophene synthesis

Benzothiophene, arylation

Benzothiophene, decomposition

Benzothiophene-1,1-dioxide

Benzothiophene-1,1-dioxide, reduction

Benzothiophene-TCNQ

Benzothiophenes

Benzothiophenes

Benzothiophenes acids/ketones

Benzothiophenes amino

Benzothiophenes and Dibenzothiophenes

Benzothiophenes coupling reactions

Benzothiophenes derivatives

Benzothiophenes design

Benzothiophenes hydrodesulfurization

Benzothiophenes lithiation

Benzothiophenes methylation

Benzothiophenes oxidation

Benzothiophenes reduction

Benzothiophenes ring synthesis

Benzothiophenes structure

Benzothiophenes synthesis

Benzothiophenes, 2,3-dihydroxylation

Benzothiophenes, hydrogenation

Benzothiophenes, nucleophilic substitution

Benzothiophenes, rearrangement

Benzothiophens

Benzothiophens

Benzothiophens and their Benzo-fused Systems

Bonded metal benzothiophene and dibenzothiophene complexes

C-S bond cleavages of thiophenes, benzothiophenes, and dibenzothiophenes

Catalysts benzothiophene

Electron-rich benzothiophenes

Furans, Benzofurans, Thiophenes, and Benzothiophenes

Furo benzothiophenes

Fused benzothiophenes

Halo-benzothiophenes

Heteroaryl Heck reaction benzothiophene

Hydrogenation of benzothiophenes

Hydrogenolysis of benzothiophenes

Indole, Benzofuran, and Benzothiophene

Indoles, benzofurans and benzothiophenes

Ionic hydrogenation benzothiophenes

Oxidation benzothiophene

Oxidative desulfurization benzothiophene

Reactions of Thiophene and Benzothiophene

Reactions with Thiophene and Benzothiophene

Selenolo benzothiophenes

Synthesis of Benzothiophenes

Synthesis of Benzothiophenes and Benzofurans

Synthesis of Benzothiophenes via 4 1 Cycloaddition Reactions

Synthesis of Benzothiophens

Synthesis of Benzothiophens by Ring-closure Reactions

Synthesis of Thiophene and Benzothiophene

Tetracyclic benzothiophenes

Thianaphthene (2,3-Benzothiophene)

Thieno benzothiophene

Thieno benzothiophenes

Thiophene benzothiophenes

Thiophenes and benzothiophenes

Thiophens and Benzothiophens

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