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F Hoffmann La Roche AG
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F Hoffmann La Roche AG
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Publication of ES323099A1publicationCriticalpatent/ES323099A1/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Process for the synthesis of propylic ethers, of the general formula Ar - Y - CH2 - C ≡ CR (I) wherein the symbol Ar represents one of the groups la, Ib or Ic ** (See formula) ** where X is a halogen atom; p is a number whole by value from 1 to 5 (with the proviso that in group Ib the nitro substituent is in the ortho or meta position when n is 1, Y is oxygen and R is hydrogen or iodine); m and n are integers from 1 to 4, such that the sum of m and n is not greater than 5; And it is an atom of oxygen or sulfur; and R is a halogen atom (when Ar is one of the groups Ia, Ib or Ic) or a halogen or hydrogen atom (when Ar is one of the groups Ib or Ic), which consists either of reacting a compound of the general formula Ar-YH (II) where Ar and Y have the meaning stated above, with a 3-halopropin and, if desired, halogenating the compound obtained, of the general formula Ar - Y - CH2 - C ≡ CH (III) where Ar and Y have the meaning stated above, or in condensing a compound of the above general formula II with a 1,3-dihalopropin. (Machine-translation by Google Translate, not legally binding)
ES0323099A1965-02-161966-02-15Procedure for the synthesis of propinyl eteres. (Machine-translation by Google Translate, not legally binding)
ExpiredES323099A1
(en)
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