bis(1-hydroxy-2,2,6,6-tetramethyl-4-piperidinyl) decandioate synthesis
- Product Name:bis(1-hydroxy-2,2,6,6-tetramethyl-4-piperidinyl) decandioate
- CAS Number:30538-92-2
- Molecular formula:C28H52N2O6
- Molecular Weight:512.72
2516-92-9
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Yield:-
Reaction Conditions:
with ascorbic acid in 1,4-dioxane;water at 20; for 1 h;Inert atmosphere;
Steps:
7 Synthesis Example 7: Synthesis of 1,10-bis(1-hydroxyl-2,2,6,6-tetramethyl-4-piperidinyl)decanedioate (material example 50)
All solvents used were thoroughly degassed beforehand using an atmosphere of argon.During operation, a brown glass device must be used.1.70 g (3.32 mmol) of free radicals from material example 4 (synthesis example 2) were dissolved in 60 ml of dioxane.3.6 g (20 mmol) of ascorbic acid was dissolved in 30 ml of water, after which water was added dropwise to this solution at room temperature.During the dropwise addition, the reaction solution turned colorless, and the reaction was completed after stirring at room temperature for 1 hour.The mixture is extracted with 100 ml of dichloromethane, the organic phase is washed with water,dried overNa2SO4, filtered and evaporated.The yellow crystals formedwere dried at160° C. and 10-2mbar for 5 minutes to give a viscous oil that crystallizes slowly.
References:
KR102245564,2021,B1 Location in patent:Paragraph 0424-0426
50-81-7
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