Sudheesh, N. published the artcileInvestigations on different efficient strategies for the selective synthesis of jasminaldehyde over HRhCO(PPh3)3-hexagonal mesoporous silica and chitosan catalysts, Name: 3-(Trimethoxysilyl)propan-1-amine, the publication is Reaction Kinetics, Mechanisms and Catalysis (2022), 135(3), 1485-1502, database is CAplus.
The jasminaldehyde synthesis via conventional cross-aldol condensation of heptanal with benzaldehyde using heterogeneous catalyst with a heptanal:benzaldehyde ratio of 1:4 was performed. Even with 100% conversion of heptanal with 100% selectivity, only 25% benzaldehyde reacts and 75% of benzaldehyde has to remain unreacted as the heptanal:benzaldehyde ratio was 1:4. So here, a strategy was applied in which, addition of heptanal in regular intervals to the reaction mixture was performed by keeping the ratio of heptanal:benzaldehyde as ? 1:4. This could afford to convert 62% of benzaldehyde to jasminaldehyde with 69% selectivity in 20 h. Heptanal was obtained by hydroformylation of 1-hexene. Hence in the next strategy, the investigations was performed for the synthesis of jasminaldehyde via a tandem reaction by individually carrying out hydroformylation and aldol condensation. Hydroformylation of 1-hexene to heptanal and further condensation of this product mixture with benzaldehyde to jasminaldehyde, using heterogeneous catalysts HRh(CO)(PPh3)3 encapsulated HMS (HF-1) and amino functionalized chitosan (CH-1) resp. were studied. The study was also extended to perform a single-pot hydroformylation and aldol condensation using heterogeneous catalysts (HF-1) and (CH-1) together. All the strategies were found to be effective for selective synthesis for jasminaldehyde, however the performance for addition of heptanal in regular intervals to the reaction mixture was remarkable due to being capable to consume 62% benzaldehyde.
Reaction Kinetics, Mechanisms and Catalysis published new progress about 13822-56-5. 13822-56-5 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is 3-(Trimethoxysilyl)propan-1-amine, and the molecular formula is C8H5F3O3, Name: 3-(Trimethoxysilyl)propan-1-amine.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia