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Thiadiazol

An original method has recently been developed starting either from 1.3-dithiolane (10) or from 1.3.4-thiadiazole-2-thione derivatives (11) (Scheme 4) (3). This method does not work when Ri is an aryl group. [Pg.372]

Fig. 1-6). The structure obtained for thiazoie is surprisingly close to an average of the structures of thiophene (169) and 1,3,4-thiadiazole (170) (Fig. 1-7). From a comparison of the molecular structures of thiazoie, thiophene, thiadiazole. and pyridine (171), it appears that around C(4) the bond angles of thiazoie C(4)-H with both adjacent C(4)-N and C(4)-C(5) bonds show a difference of 5.4° that, compared to a difference in C(2)-H of pyridine of 4.2°, is interpreted by L. Nygaard (159) as resulting from an attraction of H(4) by the electron lone pair of nitrogen. [Pg.46]

Rg. 1-7. Molecular structures of thiophene and 1,3,4-thiadiazole bond lengths in A (left), bond angles in degrees (right). [Pg.46]

Thiosemicarbazides are useful in forming 1,3,4-thiadiazoles, a class of compounds having herbicidal activity. [Pg.281]

Dimercapto-l,3,4-thiadiazole derivatives, accelerated by amines, are used to cross-link chlorinated polyethylene. Polyisobutylene containing brominated i ra-methylstyrene cure functionahty can be cross-linked in polymer blends with dimercapto-1,3,4-thiadiazole derivatives accelerated with thiuram disulfides. Trithiocyanuric acid is suggested for use in polyacrylates containing a chlorine cure site and in epichlorohydrin mbbers. [Pg.225]

The precise geometrical data obtained by microwave spectroscopy allow conclusions regarding bond delocalization and hence aromaticity. For example, the microwave spectrum of thiazole has shown that the structure is very close to the average of the structures of thiophene and 1,3,4-thiadiazole, which indicates a similar trend in aromaticity. However, different methods have frequently given inconsistent results. [Pg.33]

In contrast to thiazoles, certain isothiazoles and benzisothiazoles have been directly oxidized to sulfoxides and sulfones. 4,5-Diphenyl-l,2,3-thiadiazole is converted by peracid into the trioxide (146). Although 1,2,5-thiadiazole 1,1-dioxides are known, they cannot be prepared in good yield by direct oxidation, which usually gives sulfate ion analogous to the results obtained with 1,2,4- and 1,3,4-thiadiazoles (68AHC 9)107). [Pg.61]

Substituents in 1,3,4-thiadiazoles are quite strongly activated, as in the 2-position of pyridine. [Pg.83]

Deacylations are known. C-Acyl groups in 1,3,4-thiadiazoles are cleaved by sodium ethoxide in ethanol (68AHC(9)165). Imidazole-2-carbaldehyde behaves similarly, yielding imidazole and ethyl formate this reaction involves an ylide intermediate. 3-Acylisoxazoles (405) are attacked by nucleophiles in a reaction which involves ring opening (79AHC(25)147). [Pg.93]

There are many related examples which are now known as the general Dimroth rearrangement. For example, 3-ethylamino-l,2-benzisothiazole (419) is in equilibrium in aqueous solution with the 2-ethyl-3-imino isomer (420) <72AHCf 14)43). Dimroth rearrangements are known in the 1,2,4-thiadiazole series (421- 422), and in the 1,3,4-thiadiazole series as products of reactions of halogeno-l,3,4-thiadiazoles see Section 4.02.3.9.1 <68AHC(9)165). For a similar example in the 1,2,3,4-thiatriazole series, see Section 4.02.3.1.9. [Pg.94]

Reaction of a hydrazide (128) with phosgeneiminium chloride (115) led to the 2-dimethylamino-l,3,4-oxadiazole (129) in 90% yield (75AG(E)806). The 1,3,4-thiadiazole system was also obtained in an analogous reaction in which the dithioimidate (130) underwent reaction with the thiohydrazide (131). Depending on the nature of X in (131), the 2-substituent in the resultant 1,3,4-thiadiazole (132) may be varied (80ZC413). Although (130)... [Pg.126]


See other pages where Thiadiazol is mentioned: [Pg.473]    [Pg.473]    [Pg.292]    [Pg.14]    [Pg.19]    [Pg.25]    [Pg.25]    [Pg.29]    [Pg.30]    [Pg.31]    [Pg.34]    [Pg.95]    [Pg.97]    [Pg.115]    [Pg.127]    [Pg.142]    [Pg.150]    [Pg.175]    [Pg.11]    [Pg.61]    [Pg.62]    [Pg.62]    [Pg.62]    [Pg.62]    [Pg.62]    [Pg.62]    [Pg.62]    [Pg.62]    [Pg.62]    [Pg.62]    [Pg.62]    [Pg.62]    [Pg.62]    [Pg.62]    [Pg.62]    [Pg.62]    [Pg.62]    [Pg.62]    [Pg.62]   
See also in sourсe #XX -- [ Pg.1318 ]




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1, 2, 4, Thiadiazole diazonium salts

1, 2, 4, Thiadiazole diazonium salts coupling reactions

1, 2, 4, Thiadiazole diazonium salts from amino-1, 2, 4-thiadiazoles

1, 2, 4, Thiadiazole diazonium salts preparation

1, 2, 4, Thiadiazole diazonium salts with amines

1, 2, 4-Thiadiazole-5-sulfonic acids

1, 2, 4-Thiadiazole-carboxylates

1, 3, 4-Thiadiazoles, chemistry

1,2,3-Thiadiazole 4-carboxylic acid, ring synthesis

1,2,3-Thiadiazole Subject

1,2,3-Thiadiazole lithiation

1,2,3-Thiadiazole photolysis

1,2,3-Thiadiazole rearrangement

1,2,3-Thiadiazole thermolysis

1,2,3-Thiadiazoles Wolff rearrangement

1,2,3-Thiadiazoles flash-vacuum pyrolysis

1,2,3-Thiadiazoles synthesis of thioketenes

1,2,3-Thiadiazoles, elimination

1,2,3-Thiadiazoles, solution-phase

1,2,3-Thiadiazoles, synthesis using thionyl

1,2,3-Thiadiazoles, synthesis using thionyl chloride

1,2,3-thiadiazole

1,2,3-thiadiazole

1,2,3-thiadiazole, 4-carboxylic acid

1,2,4-Thiadiazole, 5-chloro-3-mercapto

1,2,5-Thiadiazole 1,1-dioxides structure

1,2,5-Thiadiazole 1,1-dioxides thermolysis

1,2,5-Thiadiazole 1-oxide

1,2,5-Thiadiazole ketones

1,2,5-Thiadiazole, 3-phenyl-, nitration

1,2,5-Thiadiazole-3,4-dicarbonyl

1,2,5-Thiadiazoles

1,2,5-Thiadiazoles

1,2,5-Thiadiazoles, aryl

1,3,4-Thiadiazole 2-dimethylamino

1,3,4-Thiadiazole 2-nitro-5-amino

1,3,4-Thiadiazole, 2-chloro-*, synthesis

1,3,4-Thiadiazole-2,5-dithiol

1,3,4-Thiadiazoles, 2-amino- from

1,3,4-Thiadiazoles, 2-amino-, EMME

1,3,4-thiadiazoles, microwave-assisted

1,3,4-thiadiazoles, microwave-assisted synthesis

1.2- Thiazolo -1,2,3-thiadiazole

1.2.3- Thiadiazole metallation

1.2.3- Thiadiazole, pyrolysis

1.2.3- Thiadiazole-4-carboxylic acid/ester

1.2.3- Thiadiazoles alkylation

1.2.3- Thiadiazoles deuteration

1.2.3- Thiadiazoles ring synthesis

1.2.3- Thiadiazoles, 5-azido

1.2.3- Thiadiazoles, alkyl-, side-chain

1.2.3- Thiadiazoles, base-catalyzed

1.2.3- Thiadiazoles, base-catalyzed exchange

1.2.3- Thiadiazoles, halo-, synthesis

1.2.3- Thiadiazoles, mesoionic

1.2.4- Oxadiazoles forming 1,2,4-thiadiazoles

1.2.4- Thiadiazol-5 -imines

1.2.4- Thiadiazole 1,1-dioxides, 4,5-dihydro

1.2.4- Thiadiazole 3-amino-, diazonium salts

1.2.4- Thiadiazole Dimroth rearrangements

1.2.4- Thiadiazole amino-, nitrosamines

1.2.4- Thiadiazole pyrimidine

1.2.4- Thiadiazole ring opening

1.2.4- Thiadiazole ring synthesis

1.2.4- Thiadiazole ring, functionalized

1.2.4- Thiadiazole, 5-amino-3-methyl

1.2.4- Thiadiazole, 5-amino-3-phenyl

1.2.4- Thiadiazole, ring expansion

1.2.4- Thiadiazole-3-thiones, tautomerism

1.2.4- Thiadiazoles 2 molecules)

1.2.4- Thiadiazoles biological properties

1.2.4- Thiadiazoles chemical properties

1.2.4- Thiadiazoles nitriles

1.2.4- Thiadiazoles physical properties

1.2.4- Thiadiazoles properties

1.2.4- Thiadiazoles ring interconversions

1.2.4- Thiadiazoles spectra

1.2.4- Thiadiazoles, 5-amino— from amidines

1.2.4- Thiadiazoles, amino-, halogenation

1.2.4- Thiadiazoles, formation rearrangements

1.2.4- Triazoles 1.3.4- thiadiazoles

1.2.4- Triazolo thiadiazoles

1.2.4- Triazolo thiadiazoles formation

1.2.5- Thiadiazol-3 -ones, synthesis

1.2.5- Thiadiazole .S’-oxide

1.2.5- Thiadiazole 1,1-dioxides

1.2.5- Thiadiazole 1,1-dioxides synthesis

1.2.5- Thiadiazole 3,4-dione

1.2.5- Thiadiazole anion radicals

1.2.5- Thiadiazole electrochemical reduction

1.2.5- Thiadiazole halogenation

1.2.5- Thiadiazole reduction

1.2.5- Thiadiazole reductive cleavage

1.2.5- Thiadiazole, 3-amino-, ring

1.2.5- Thiadiazole, 3-amino-, ring bromination

1.2.5- Thiadiazole, 3-methyl-, ring

1.2.5- Thiadiazole, chloromethylation

1.2.5- Thiadiazole-3,4-dicarbonitrile

1.2.5- Thiadiazoles 1.2- benzisothiazoles

1.2.5- Thiadiazoles 2,4-dihydro— from

1.2.5- Thiadiazoles hydrocarbons

1.2.5- Thiadiazoles stability

1.2.5- Thiadiazoles structural data

1.2.5- Thiadiazoles using

1.2.5- Thiadiazoles using thionyl chloride

1.2.5- Thiadiazoles, methyl-, side-chain

1.2.5- Thiadiazoles, reaction with

1.2.5- Thiadiazoles, synthesis

1.3.4- Thiadiazol-2-ones, mesoionic

1.3.4- Thiadiazole 2-amino-, bromination

1.3.4- Thiadiazole 2-chloro-, Dimroth rearrangement

1.3.4- Thiadiazole substituents, highly activated

1.3.4- Thiadiazole, 2-bromo

1.3.4- Thiadiazole, 2-bromo synthesis

1.3.4- Thiadiazole, 2-trichloromethyl

1.3.4- Thiadiazole, base-catalyzed

1.3.4- Thiadiazole, base-catalyzed exchange

1.3.4- Thiadiazoles basicity

1.3.4- Thiadiazoles review)

1.3.4- Thiadiazoles structure

1.3.4- Thiadiazoles tautomerism

1.3.4- Thiadiazoles, 2-chloro-, condensation

1.3.4- Thiadiazoles, amino-, diazotization

1.3.4- Thiadiazoles, recent advances

1.3.4- Thiadiazoles, recent advances in the

1.3.4- Thiadiazoles, recent advances in the chemistry

1.3.4- Thiadiazoles, substituted

1.3.4- thiadiazole-2-thiol

2, 5-Dimercapto-l, 3, 4-thiadiazole

2,5-Dimercapto-1,3,4-thiadiazole

2,5-Dimethyl-1,3,4-thiadiazole

2- Amino-1.3.4-thiadiazoles, acylation

2- Amino-l,3,4-thiadiazoles

2- Halo-1,3,4-thiadiazoles

2-Amino-1,3,4-thiadiazole

2-Amino-1,3,4-thiadiazoles, reaction with

2-Amino-5-aryl-1,3,4-thiadiazoles

2-Amino-5-ethyl-1,3,4-thiadiazole

2-Arylamino-l,3,4-thiadiazoles

2-Mercapto- 1,3,4-thiadiazoles, tautomerism

2-Mercapto-5-methyl-1,3,4-thiadiazole

2-Mercapto-5-methyl-l,3,4-thiadiazole

2-Mercapto-5-methyl-l,3,4-thiadiazole mercury complexes

2-Nitrosamino-13,4-thiadiazole

2.1.3- Thiadiazole ring

2.5- Diaryl-1,3,4-thiadiazoles

2.5- Dihydro-l ,3,4-thiadiazoles

2.5- dimercapto-l,3,4-thiadiazole DMcT)

3,4-Dicyano-l,2,5-thiadiazole

3- 1,2,5-thiadiazole 5,5-dioxide formation

3- Amino-1,2,5-thiadiazol, formation

3- Amino-1.2.5-thiadiazole, chlorination

3- Hydroxy-1,2,4-thiadiazoles

3- Hydroxy-1,2,4-thiadiazoles properties

3- Hydroxy-1,2,4-thiadiazoles synthesis

3- Hydroxy-1,2,4-thiadiazoles, tautomerism

3- Mercapto-l,2,4-thiadiazoles

3-Halo-l,2,4-thiadiazoles

3-Monoheteroarylamino thiadiazole

3-Phenyl triazolo thiadiazole

3.5- Disubstituted 1,2,4-thiadiazoles

4-Thiadiazole,2,5-bis

5- Amino-3-methyl-l,2,4-thiadiazole

5- Amino-l,2,3-thiadiazole

5- Chloro-1,2,4-thiadiazoles

5- Substituted 2-amino-l,3,4-thiadiazoles

5-Alkylamino-1,2,4-thiadiazole

5-Aryloxy-1,2,3-thiadiazoles

5-Chloro-l, 2, 3-thiadiazol

5-Dimethylamino-3-Phenyl 4-Thiadiazole

5-Ethoxy-3-trichloromethyl-1,2,4-thiadiazol

5-Methyl-l,3,4-thiadiazole-2-thiol

5-Unsubstituted 1,2,3-thiadiazoles

7- -3-(2-methyl-1,3,4-thiadiazol

Alkoxy-1,3,4-thiadiazoles

Alkylations 1,2,4-thiadiazole

Amidines 1,2,4-thiadiazoles, 5-amino

Amidinothioureas 1,2,4-thiadiazoles

Amino-1,2,4-thiadiazoles chemistry

Amino-1,2,4-thiadiazoles properties

Amino-1,2,4-thiadiazoles synthesis

Azoles Pyrazoles, Thiadiazoles, Thiazoles

Benzimidazole thiadiazoles

Benzo thiadiazole-1,1 -dioxide

Benzo thiadiazoles

Benzo-1,2,5-thiadiazole

Benzo-2,l,3-thiadiazol

Benzo-l,2,3-thiadiazole

Benzo-l,2,3-thiadiazoles

C2H2N2S 1,2,5-Thiadiazole

Carboxy-1,3,4-thiadiazoles

Chemistry (Cont of 1,3,4-thiadiazoles

Chemistry of 1,3,4-thiadiazoles

Chlorination 1.2.5- thiadiazole

Condensed 1,2,4-Thiadiazoles

Condensed Ring Systems incorporating 1,3,4-Thiadiazole

Condensed Systems incorporating 4- Thiadiazoles

Cycloaddition, 1,3-dipolar 1.2.3- thiadiazoles

Diamino- 1,2,4-thiadiazoles

Diamino- 1,2,4-thiadiazoles properties

Diamino- 1,2,4-thiadiazoles synthesis

Diazo-1,3,4-thiadiazoles

Diazoamino-1,2,4-thiadiazoles

Dimercapto-1,2,4-thiadiazole properties

Dimethyl l,2,5-thiadiazole-3,4-dicarboxylate

Dithiocarbazic 1,3,4-thiadiazoles

Functionalizations 1,2,3-thiadiazole

Fungicides 1,3,4-thiadiazoles

Fused thiadiazoles

Halogeno-1,3,4-thiadiazoles

Halogeno-l,2,4-thiadiazoles

Heterocycles 1,2,5-thiadiazole

Heterocyclic compounds, aromatic thiadiazoles

Heterocyclics thiadiazoles

Hurd-Mori 1,2,3-thiadiazole synthesis

Hurd-Mori synthesis of 1,2,3-thiadiazoles

Hydrazino-1,3,4-thiadiazoles

Hydrocarbons, hydrocarbon 1,2,5-thiadiazoles

Hydroxy-l,2,5-thiadiazoles

Imidazo -1,3,4-thiadiazoles

Imidazo thiadiazole

Imidazo thiadiazole bromination

Imidazo thiadiazoles synthesis

In the chemistry of 1,3,4-thiadiazoles

Isothiocyanates 1.2.4- thiadiazoles, 5-amino

Isoureas 1.2.4- thiadiazoles, 5-amino

Isoxazoles forming 1,2,4-thiadiazoles

Keto-1,3,4-thiadiazoles

Kurzer 2 1,2,3-Thiadiazoles

L,3,4-Thiadiazole-2,5-dione

Mercapto-1,2,4-thiadiazoles

Naphtho thiadiazoles

Naphtho- -[ 1,2,5 thiadiazole

Nitro-1,3,4-thiadiazoles

Nitrosamino-1,2,4-thiadiazoles

Of 1,3,4-thiadiazoles

Oxadiazole, Oxazole, and Thiadiazole Polymers

Oxadiazoles and Thiadiazoles

Oxadiazoles or thiadiazoles

Oxidative dimerization - 1,2,4-thiadiazole

Phosgene 1.3.4- thiadiazol-2 -ones

Photolysis of 1,2,3-thiadiazoles

Polymeric 1,3,4-Thiadiazoles

Polymers with pendant thiadiazole

Properties of 1,2,3-Thiadiazoles

Radicals from Oxadiazoles, Thiadiazoles, and Selenadiazoles

Recent advances of 1,3,4-thiadiazoles

Solid-Phase Synthesis of 1,2,4-Thiadiazoles

Solid-Phase Synthesis of 1,3,4-Oxadiazoles and 1,3,4-Thiadiazoles via Selective Cyclization

Spiro thiadiazoles

Sulfonyl-1,3,4-thiadiazoles

Synthesis of 1,2,4-Thiadiazoles

Systems incorporating 1,2,5-Thiadiazole

Thiadiazol-2-enes

Thiadiazol-2-ones

Thiadiazole C-Nucleosides

Thiadiazole Derivatives for n-Type Semiconductors

Thiadiazole aromaticity

Thiadiazole chemical structures

Thiadiazole crystal structures

Thiadiazole derivatives

Thiadiazole dioxides, decomposition

Thiadiazole herbicides

Thiadiazole polymers

Thiadiazole structures

Thiadiazole synthesis

Thiadiazole, derivs

Thiadiazole, electronic structure

Thiadiazole-2-thiones

Thiadiazole-fused heteroarenes

Thiadiazoles 1,2,51 thiadiazolo pyrimidines

Thiadiazoles 3-alkylthio— from

Thiadiazoles Dimroth rearrangement

Thiadiazoles and Selenathiadiazoles

Thiadiazoles and Thiadiazolines

Thiadiazoles and Triazoles

Thiadiazoles and other 5-Membered Systems

Thiadiazoles and selenadiazoles

Thiadiazoles and selenodiazoles

Thiadiazoles as Substrates

Thiadiazoles decomposition

Thiadiazoles electrochemical reduction

Thiadiazoles formation

Thiadiazoles quaternization

Thiadiazoles radicals from

Thiadiazoles reactions

Thiadiazoles reactivity

Thiadiazoles rearrangement

Thiadiazoles thiol-thione tautomerism

Thiadiazoles treatment

Thiadiazoles, (continued

Thiadiazoles, amino

Thiadiazoles, amino-, tautomerism

Thiadiazoles, computational studies

Thiadiazoles, phosphorylated

Thiadiazoles, photolysis

Thiadiazoles, reduction

Thiazole and thiadiazole 5-oxides

Thiazole and thiadiazole S-oxides

Thiazoles, and Thiadiazoles

Thiazolo thiadiazoles

Thiazolo-- and --thiadiazoles

Thiazolo-l,3,4-thiadiazoles

Thioketenes 1,2,3-thiadiazoles

Thioketenes, from 1,2,3-thiadiazoles

Thioketens from 1,2,3-Thiadiazoles

Thiophene-1,3,4-thiadiazole

Thiosemicarbazides 1.3.4- thiadiazoles

Thiosemicarbazones 1.3.4- thiadiazoles

Thiosemicarbazones 1.3.4- thiadiazoles, 2-amino

Trichloromethylsulfenyl 1.2.4- thiadiazoles

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