Synthesis of di(1,1,3-trihydroperfluoropropoxy)methane and di(1,1,3-trihydroperfluoropropoxy)ethane
作者:A. I. Rakhimov、O. N. Kutyga、A. A. Bakshaeva
DOI:10.1134/s1070363209110292
日期:2009.11
The synthesis of acetal I was accomplished by the reaction of 1,1,3-trihydroperfluoropropanol III with paraformaldehyde in the presence of 96% sulfuric acid at room temperature in 20–24 h. Yield of acetal I was 27%. At the use of dry hydrogen chloride the yield of I increases to 43%. The notable increase in the yield of acetal I is probably due to α-chloroether formation as an intermediate compound
缩醛 I 的合成是通过 1,1,3-三氢全氟丙醇 III 与多聚甲醛在 96% 硫酸存在下在室温下在 20-24 小时内反应完成的。乙缩醛I的产率为27%。在使用干燥氯化氢时,I 的产率增加到 43%。缩醛 I 产率的显着增加可能是由于形成了 α-氯醚作为中间化合物,然后与下一分子的多氟醇反应。因此,多氟缩醛最有效的方法是α-氯醚与多氟醇的反应。显然,可以通过改变 HCl 的添加量来选择形成 α-氯醚的最佳条件(无需分离 α-氯醚)。
Synthesis of α-chloropolyfluoroalkyl ethers and acetals based on them
作者:A. I. Rakhimov、O. N. Kutyga、A. A. Bakshaeva
DOI:10.1134/s1070363211030194
日期:2011.3
alpha-Chloropolyfluoroalkyl ethers were synthesized by the reaction of polyfluorinated alcohols H(CF(2)CF(2)) (n) CH(2)OH (n=1-3) with aliphatic aldehydes (ethanal, propanal, butanal) and hydrogen chloride. Yield of alpha-chloroethers decreases from 71 to 61% as the number of carbon atoms in the starting reactants increases. alpha-Chloropolyfluoroalkyl ethers react with polyfluorinated alcohols (n = 1-3) to form acetals in yield of up to 40-61%, and with methanol and ethanol, up to 98%.
KUTYGA, O. M.;PRONINA, I. I., SINTEZ HOB. POLITSIKLICH. I GETEROTSIKLICH. SOED., KUJBYSHEV,(1989) S. 98+
作者:KUTYGA, O. M.、PRONINA, I. I.
DOI:——
日期:——
YAKUPOV, I. S.;GERMASH, A. V.;ZLOTSKIJ, S. S.;RAXMANKULOV, D. L., ZH. ORGAN. XIMII, 26,(1990) N, S. 1187-1191
作者:YAKUPOV, I. S.、GERMASH, A. V.、ZLOTSKIJ, S. S.、RAXMANKULOV, D. L.
DOI:——
日期:——
YAKUPOV, I. S.;EHIZATULLINA, S. P.;GERMASH, A. V.;ZLOTSKIJ, S. S.;RAXMANK+, WISS. Z. TECHN. HOCHSCH. CARL SCHORLEMMER, LEUNA-MERSEBURG., 31,(1989) N,+
作者:YAKUPOV, I. S.、EHIZATULLINA, S. P.、GERMASH, A. V.、ZLOTSKIJ, S. S.、RAXMANK+