Preparation By Reductive Alkylation TRIZ Cases
- Twin-Tail Triamine Synthesis Without Lewis Acids
A two-step reductive amination route uses transition metal catalysis to make twin-tail triamines with higher yield, less waste, and lower cost.
- Tertiary Amine Synthesis via Segmented Alcohol Dehydrogenation
Segmented reaction steps isolate alcohol dehydrogenation from amine addition, eliminating disproportionation side reactions while maintaining high selectivity.
- N-Substituted Acyclic Ethylene Diamines from Biomass
Supported hydrogenation catalysts convert reducing sugars and amines into N-substituted acyclic ethylene diamines, suppressing heterocyclic by-products.
- Aromatic Primary Diamine Production via Amine Ratio Control
Maintaining an amine-to-dialdehyde molar ratio of at least 1:4 prevents precipitation during reductive amination, increasing primary diamine yield.
- Asymmetric Alkylation Using Boronic Acid Bridging for Escitalopram Synthesis
Boronic acid derivatives bridge carbonyl groups and chiral auxiliaries to enable stereoselective alkylation of tertiary alcohols.
- Triacetonediamine Reductive Amination for Discoloration Control
Starting with triacetonediamine instead of tetramethylpiperidinone removes residual impurities that discolor plastics during large-scale synthesis.
- Halogen-N,N-dimethylbenzylamine Reductive Amination Without Sulfur
A sulfur-free reductive amination process for halogen-N,N-dimethylbenzylamines that prevents catalyst poisoning and simplifies product separation.
- Reductive Amination Yield via Product Amine Seeding
Pre-added product amine suppresses polymeric by-products to raise diamine yields above 70 percent.
- Nickel Slurry Rheology Modifiers for Suspension Stability
Pseudoplastic rheology modifiers suspend dense nickel particles at rest while reducing viscosity under shear stress to prevent sedimentation during transfer.
- Reductive Amination Synthesis of Piperidine Ester Intermediates
A reductive amination process synthesizes 1-(2-chloroethyl)-4-piperidinecarboxylic acid ethyl ester using methanol and sodium cyanoborohydride.
- Indole Antagonists for p53-Mdm2 Binding
Segmented indole derivatives overcome flat interface complexity to achieve sub-micromolar binding affinity against Mdm2.