《N-Iminopyridinium ylide-directed, cobalt-catalysed coupling of sp2 C-H bonds with alkynes》 was published in Chemical Communications (Cambridge, United Kingdom) in 2020. These research results belong to Kwak, Se Hun; Daugulis, Olafs. Reference of 3-(Methoxycarbonyl)benzoic acid The article mentions the following:
N-Iminopyridinium ylides were competent monodentate directing groups for cobalt-catalyzed annulation of sp2 C-H bonds with internal alkynes. The pyridine moiety in the ylide serves as an internal oxidant and was cleaved during the reaction. The annulation reactions possess excellent compatibility with heterocyclic substrates, tolerating furan, thiophene, pyridine, pyrrole, pyrazole, and indole functionalities. In the experiment, the researchers used 3-(Methoxycarbonyl)benzoic acid(cas: 1877-71-0Reference of 3-(Methoxycarbonyl)benzoic acid)
3-(Methoxycarbonyl)benzoic acid(cas: 1877-71-0) belongs to esters. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. Reference of 3-(Methoxycarbonyl)benzoic acid
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics