反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
CONDITIONS
反应条件
- 温度
- 57.5 °C
PROCEDURE
实验过程
tris(2,4-Di-tert.butylphenyl)phosphite (5146 g; Irgafos® 168, Ciba Specialty Chemicals) and isopropanol (IPA, 7890 g) are mixed in a reaction vessel and heated to 55-60° C. At this point the mixture is a slurry of approximately 39.0% solids. The peroxide (549 g, 50 weight-% solution of H2O2 in water, 1 equivalent) is added for 2-3 hours while maintaining the pot temperature (reaction is exothermic). After the peroxide addition, the mixture is maintained for 1 hour at 60° C. The reaction mass is homogeneous and the completeness of reaction is checked by LC (>97.0% conversion). Water (1355 g) is added, and the reaction mass is seeded to induce crystallization. Cooling slowly in 2 steps to 45° C. and then to 20° C. completes crystallization. The product is filtered (25μ screen), then dried at 70° C. under full vacuum with a nitrogen sweep.
WORKUP
后处理
- temperaturewhile maintaining
- customthe pot temperature (reaction is exothermic)
- temperaturethe mixture is maintained for 1 hour at 60° C
- customthe completeness of reaction
- customcrystallization
- temperatureCooling slowly in 2 steps to 45° C.
- customto 20° C.
- customcrystallization
- filtrationThe product is filtered (25μ screen)
- customdried at 70° C. under full vacuum with a nitrogen sweep