Immobilization of an organocatalytic residue on a solid sup- port imparts stability and recyclability to the original homogene- ous organocatalyst. Silica gel with grafted organic residues on the surface has played an important role as a heterogeneous or- ganocatalyst in synthetic organic chemistry.1 We have success- fully utilized amorphous aminopropylated silica of micrometer particle size (NAP) as sustainable catalysts for 1,4-conjugate ad- ditions of naked ...
![[4-(2-nitroethenyl)phenyl] acetate Structure](https://image.chemsrc.com/caspic/158/18984-24-2.png)