Synthesis of 2,3-Diphenylacrolein Acetals

Non-waste energy and resource-saving heterogeneous catalytic methods of obtaining and transformation of cyclic acetalies and gem-dichlorocyclopropanes

“…We found [12] that heterogeneous catalyst -anionite АВ-17 allows carry out the reaction of with stoichiometric ratio of the reagents in 4-6 hours at 120-125°С temperature with yield 80-90 % of linear acetals (Fig. 5).…”

“…Catalytic isomerization of substituted vinyl-gem-dichlorocyclopropanes It was found at the 230 °C temperature and continuing of the reaction in 1.5 h yield of targeted cyclopenteneswas ≥ 90 % (selectivity ≥ 95 %).It was known way from available, based on derivatives of sterol, vinyl-gemdichlorocyclopropane to derivatives of phenylacroleinin conditions of homogeneous catalysis[11]. It needs to 18-24 h and 5-7-multipleexcess of alcohol for the obtaining of acceptable yields of 60-70 %.We found[12] that heterogeneous catalyst -anionite АВ-17 allows carry out the reaction of with stoichiometric ratio of the reagents in 4-6 hours at 120-125°С temperature with yield 80-90 % of linear acetals (Fig.5). The stage of alkaline flow utility and demand of purification and recycling of the solvents are excluded.…”