Catechol → Zirconium Catecholate

Temperature

100 °C

A solution of catechol (2.20 g, 20 mmol) and toluene (25 ml) was dehydrated by distilling 5 mL of the solution. Thereafter, 5.00 g (10.6 mmol) of zirconium(IV) isopropoxide was added to the solution while stirring. The mixed solution was refluxed for 1 hour, and then, while the distillation temperature was 100° C. or higher, distilled until the amount of the solution became half. After the distillation, solid content of the product was isolated by suction filtering using a membrane suction filter. The residual solid content was heated to 100° C. under vacuum using a vacuum dryer so that remaining volatile components were completely removed. The solid content (catechol-zirconium complex) was black in color. The yield amount was 3.07 g (10.0 mmol), and the yield percentage was 100%.

1. distillationby distilling 5 mL of the solution
2. temperatureThe mixed solution was refluxed for 1 hour
3. customwas 100° C.
4. distillationhigher, distilled until the amount of the solution
5. distillationAfter the distillation, solid content of the product
6. customwas isolated by suction
7. filtrationfiltering
8. filtrationfilter
9. customwere completely removed

ORD record

ord-0cb4ccab636143edbe3653e2050fb660

Source dataset

uspto-grants-2013_05

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08445118B2