ELJÁRÁS 3,7-DIMETIL-2(Z),7-OKTADIEN-1-IL-PROPIONÁT ELŐÁLLÍTÁSÁRA

Szántay, C [Szántay, Csaba (1928-2016) (Szerves kémia), szerző] Budapesti Műszaki Egyetem; Novák, L [Novák, Lajos (Szerves kémia), szerző]; Poppe, L [Poppe, László (Szerves kémia, bi...), szerző]; Majoros, B; Kis-Tamás, A; Jurák, F; Újváry, I

Magyar nyelvű Tudományos Magyar szabadalom (Oltalmi formák)
Megjelent: 1984
    Ekvivalens kivonat, GB 2139219 (A) (1984): A compound of formula is prepared by a./treating/Z/-3,7-dimethyl-2,6-octadien-1-ol of the formula /II/ with a propionating agent, reacting the propanoate thus obtained with a tert.butyl hypohalide, preferably hypochlorite in an aprotic, moderately polar solvent, in the presence of an acidic adsorbent, preferably Kieselgel, reducing the halo compound of the general formula /III/ thus obtained, wherein R stands for propionyl and Hal represents halogen, with a moderately reactive metal hydride in a polar solvent; or b./reacting/Z/-3,7-dimethyl-2,6-octadien-1-ol of the formula /II/ with a tert-butyl hypohalide, preferably in hypochlorite in a moderately polar solvent, in the presence of an acidic adsorbent, treating the halo compound of the general formula /III/ thus obtained, wherein R represents hydrogen and Hal is halogen,with a reducing agent, preferably lithium aluminum hydride, reacting the /Z/-3,7- dimethyl-2,7 -octadien-1-ol thus obtained with a propionating agent, preferably propanoic chloride, and separating the compound of the formula /I/ thus obtained from in the reaction mixture. Transfer for destroying male San Jose Scale are baited with the compounds of formula I.
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    2021-03-05 04:53