Benzofuranones

摘要

A benzofuranone of the Formula (1) :wherein :R¹ and R² are each independently -H or optionally substituted C_1-20-alkyl;R³ and R⁴ are each independently -H or optionally substituted C_1-6-alkyl;R⁵ is selected from -H, -CN, -COOR¹⁰ and -COR¹⁰, in which R¹⁰ is -H or C_1-6-alkyl;R⁶, R⁷, R⁸ and R⁹ are each independently selected from -H, -NR¹R², -N0₂, halogen, optionally substituted C_1-6-alkyl and optionally substituted C_1-6-alkoxy.