Wei, Kaijie et al. published their research in Chemical Communications (Cambridge, United Kingdom) in 2020 | CAS: 868-57-5

Methyl2-methylbutyrate (cas: 868-57-5) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Formula: C6H12O2

Iron-catalysed 1,2-aryl migration of tertiary azides was written by Wei, Kaijie;Yang, Tonghao;Chen, Qing;Liang, Siyu;Yu, Wei. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2020.Formula: C6H12O2 This article mentions the following:

The 1,2-Aryl migration of α,α-diaryl tertiary azides RC(R1)(C6H5)N3 (R = Ph, 4-fluorophenyl, iso-Pr, iso-Bu, etc.; R1 = 4-methylphenyl, Et, phenyl) was achieved by using the catalytic system of FeCl2/N-heterocyclic carbene (NHC) SIPr.HCl. The reaction generated aniline products RCHR1NHC6H5 in good yields after one-pot reduction of the migration-resultant imines. In the experiment, the researchers used many compounds, for example, Methyl2-methylbutyrate (cas: 868-57-5Formula: C6H12O2).

Methyl2-methylbutyrate (cas: 868-57-5) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Formula: C6H12O2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics