77-99-6Relevant articles and documents
METHOD FOR PREPARING TRIMETHYLOLPROPANE
-
Paragraph 0064-0066, (2020/07/07)
A method for preparing trimethylolpropane, the method including: subjecting dimethylolbutanal (DMB) to a hydrogenation reaction in the presence of a metal catalyst and an alcohol solvent. During the hydrogenation reaction, a weight ratio of the alcohol solvent based to dimethylolbutanal is 2 to 10.
Method for continuous preparation of trimethylolpropane
-
Paragraph 0018-0027, (2019/04/09)
A method for continuous preparation of trimethylolpropane includes: taking a mixture of formaldehyde and butyraldehyde as a raw material, absolute ethyl alcohol as a solvent and sodium hydroxide solution as chemical agent, allowing the mixture and a catalyst to flow and mix in capillaries to form a reaction mixture therein, performing aldol condensation and disproportionated reaction on the reaction mixture in the capillaries to obtain a product comprising trimethylolpropane, wherein the temperature of the reaction mixture is controlled to be 25 to 75 DEG C, and the reaction standing time ranges from 2 to 25 minutes by prolonging the capillaries and/or increasing volume thereof or reducing flow rate of the reaction mixture. Synthesis reaction time of trimethylolpropane is shortened as compared with that of the prior art (4-6 hours), and the yield is increased to 90% from about 75%.
Precise Steric Control over 2D versus 3D Self-Assembly of Antimony(III) Alkoxide Cages through Strong Secondary Bonding Interactions
Moaven, Shiva,Yu, Jingze,Yasin, Jason,Unruh, Daniel K.,Cozzolino, Anthony F.
supporting information, p. 8372 - 8380 (2017/07/22)
Antimony(III) alkoxide cages were designed as building blocks for predictable supramolecular self-assembly. Supramolecular synthons featuring two Sb···O secondary bonding interactions (SBIs), each SBI stronger than 30 kJ/mol, were used to drive the formation of the supramolecular architectures. Judicious choice of pendant groups provided predictable control over the formation of self-assembled 3D columnar helices, which crystallized with hollow morphologies, or a self-assembled 2D bilayer. The Sb-O stretching frequency provides a spectroscopic signature of Sb···O SBI formation.