ES429182A1 - Procedure for the preparation of omega, omega-diaril-1 bromoalcanos. (Machine-translation by Google Translate, not legally binding)
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Procedure for the preparation of omega, omega-diaril-1 bromoalcanos. (Machine-translation by Google Translate, not legally binding)
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Sifavitor SRL
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Sifavitor SRL
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Organic Low-Molecular-Weight Compounds And Preparation Thereof
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Abstract
Process for the preparation of omega, omega-diaryl-1-bromoalkanes of the general formula (I): ** (see formula) ** In which N is greater than or equal to 3 and R1 may represent a hydrogen atom, a halogen atom, an alkyl or aryl group, Characterized in that a grignard reagent of the formula (III) is reacted ** (see formula) ** In which R1 has the meaning stated above and And it's a halogen atom, With a lactone of the general formula (IV) ** (see formula) ** In which N has the meaning stated above, because the product of the mass of this reaction is treated with 48% hydrobromic acid and with boiling, whereby a 1-bromo-omega, omega-diaryl-alkene of the general formula is obtained ( vii) ** (see formula) ** (wherein r1 and n have the meaning stated above) which is hydrogenated in the presence of metal catalysts to obtain a 1-bromo-omega, omega-diarylalkane of the general formula (I) ** (see formula) ** In which R1 and n have the meaning indicated above. (Machine-translation by Google Translate, not legally binding)
ES429182A1974-04-261974-08-12Procedure for the preparation of omega, omega-diaril-1 bromoalcanos. (Machine-translation by Google Translate, not legally binding)
ExpiredES429182A1
(en)
Procedure for the preparation of n, N-bis- (2- (3,4-dihydroxypenyl) -2-hydroxyethyl) -hexameethylendiamine and of its salts by addition of acid. (Machine-translation by Google Translate, not legally binding)
The Reaction of 1-Alkynes with Organometallic Compounds. II. The Relationship between Decomposition Potentials of Grignard Reagents and Their Relative Reactivity Towards Terminal Acetylens
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