Catechol → HCID 131726537, compound

Temperature

100 °C

A solution of catechol (22.0 g, 200 mmol) and toluene (220 ml) was dehydrated by distilling 20 mL of the solution. Thereafter, 28.4 g (100 mmol) of titanium(IV) isopropoxide (TTIP) 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-titanium complex) was brown in color. The yield amount was 26.0 g (98.5 mmol), and the yield percentage was 98%. 2.64 g of catechol-titanium complex was dissolved into 100 mL of 1:4 acetylacetone/toluene to produce a coating liquid.

1. distillationby distilling 20 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
10. dissolution2.64 g of catechol-titanium complex was dissolved into 100 mL of 1:4 acetylacetone/toluene
11. customto produce a coating liquid

ORD record

ord-e2d49306cf204771bfd051db81dca63d

Source dataset

uspto-grants-2013_05

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08445118B2