38622-91-2
4-toluene-sulfonylmethyl isocyanide
+
71338-71-1
benzyl (2E)-but-2-enoate
→
~66%
89909-40-0
benzyl 4-methyl-1H-pyrrole-3-carboxylate
89909-53-5
benzyl 5-formyl-4-methyl-1H-pyrrole-3-carboxylate