Bis 2-formylphenyl

Bis[2-formylphenyltelluro] selenium was converted upon sublimation under reduced pressure to bis[2-formylphenyl] ditellurium and 2-formylphenyl 2-formylphenyltelluro... 

Macrocycle LXXXVIII was prepared (13) in an 8% yield from the reaction of the disodium salt of ethane-1,2-dithiol with di(2-bromo-ethyl)amine in ethanol at high dilution, and it was found to complex with Ni(II) and Co(II) ions when these were added as salts. A macrocycle containing the same donor atoms (LXXXIX) has been obtained in the form of complexes (87) by the template reactions of l,2-bis(2-aminophenylthio)ethane and 1,4-bis (2-formylphenyl)-1,4-dithiabutane with Ni(II) and Co(II) perchlorates. Iron, cobalt, nickel, and zinc as their M(II) perchlorates have been used as templates in the formation of XC (55, 133). 

The ease with which the Te — Te bond in ditellurium compounds is cleaved drastically limits the reactions for the modification of functional groups that are already present in the organic part of the molecules. The conversion of bis[2-carboxyphenyl] ditellurium to bis[chlorocarbonylphenyl] ditellurium by butyl dichloromethyl ether in the presence of anhydrous zinc chloride the acid hydrolysis of the ethylene acetals of bis[4-acetylphenyl] and bis[2-acetylphenyl] ditellurium to the bis[acetylphenyl] ditellurium derivatives, the saponification of bis[co-methoxycarbonylalkyl] ditelluriums to the corresponding bis[m-carboxyalkyl] ditelluriumand the oxidation of bis[2-formylphenyl] ditellurium by silver nitrate to bis[2-carboxyphenyl] ditellurium are the modifications of the organic moieties in diorgano ditellurium compounds that have been carried out successfully. 

Finally, the telluroether Schiff-base macrocycle (VI) has been obtained by condensation of bis(2-formylphenyl)telluride with 1,2-diaminoethane. 

Bis(2-formylphenyl)phenylphosphine undergoes acid-catalyzed hydration into (106), which is converted into (107) under similar conditions in methanol <82CCII70>. 

Hydrogen chloride converted bis[2-formylphenyltelluro] selenium quantitatively to 2-formylphenyl tellurium chloride2. 

The oxidation of the formyl group in 2-formylphenyl butyl tellurium by silver oxide gave bis[2-curboxyphenyl] ditellurium in addition to the expected butyl 2-carboxyphenyl tellurium6. 

The tetraazamacrocycle 102 is the first known representative of tellurium-containing macrocycles. It was prepared in 80% yield by coupling bis-(o-formylphenyl) telluride (8IKGS121) with 1,2-diaminoethane [96JCS(D) 1203]. Reduction of 102 with NaBH4 gives rise to the tetraazamacrocyclic compound 103 [96JCS(D)1203]. 

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