Zhu, Xiaotao published the artcileProtection of COOH and OH groups in acid, base and salt free reactions, Safety of 3-(Methoxycarbonyl)benzoic acid, the publication is Green Chemistry (2018), 20(7), 1444-1447, database is CAplus.
An iron-catalyzed general functional group protection method with inexpensive reagents was reported. This environmentally benign process did not use acids or bases and did not produce waste products. In most of the cases, purification beyond filtration and evaporation was unnecessary. Protection of carboxylic acids and phenols/alcs. was achieved under mild reaction conditions using Fe(OTf)3, a Lewis acid catalyst in the absence of any acid, base or salt. Free COOH and OH groups were protected in a one-pot reaction.
Green Chemistry published new progress about 1877-71-0. 1877-71-0 belongs to esters-buliding-blocks, auxiliary class Carboxylic acid,Benzene,Ester, name is 3-(Methoxycarbonyl)benzoic acid, and the molecular formula is C11H10O, Safety of 3-(Methoxycarbonyl)benzoic acid.
Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics