Turnbull, Kenneth et al. published their research in Tetrahedron Letters in 1998 | CAS: 192436-83-2

4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2) belongs to amides. The solubilities of amides and esters are roughly comparable. Typically amides are less soluble than comparable amines and carboxylic acids since these compounds can both donate and accept hydrogen bonds. Tertiary amides, with the important exception of N,N-dimethylformamide, exhibit low solubility in water. Ionic, or saltlike, amides are strongly alkaline compounds ordinarily made by treating ammonia, an amine, or a covalent amide with a reactive metal such as sodium.Product Details of 192436-83-2

The sydnone ring as an ortho-director of lithiation. 2. Dilithiation of 3-phenylsydnone and regiospecific o-aryl acylation using N-methoxy-N-methylamides was written by Turnbull, Kenneth;Sun, Congcong;Krein, Douglas M.. And the article was included in Tetrahedron Letters in 1998.Product Details of 192436-83-2 This article mentions the following:

Readily available 3-phenylsydnone reacts with butyllithium-TMEDA to form a dilithio species which can be regiospecifically acylated at the ortho-aryl position using N-methoxy-N-methylamides. In the experiment, the researchers used many compounds, for example, 4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2Product Details of 192436-83-2).

4-Bromo-N-methoxy-N-methylbenzamide (cas: 192436-83-2) belongs to amides. The solubilities of amides and esters are roughly comparable. Typically amides are less soluble than comparable amines and carboxylic acids since these compounds can both donate and accept hydrogen bonds. Tertiary amides, with the important exception of N,N-dimethylformamide, exhibit low solubility in water. Ionic, or saltlike, amides are strongly alkaline compounds ordinarily made by treating ammonia, an amine, or a covalent amide with a reactive metal such as sodium.Product Details of 192436-83-2

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