RE: Hydrogen
Reactions of Acyl Chlorides Involving Nitrogen Compounds
https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Supplemental_Modules_(Organic_Chemistry)/Acid_Halides/Reactions_of_Acid_Halides/Reactions_of_Acyl_Chlorides_Involving_Nitrogen_Compounds
EXPLAINING NUCLEOPHILIC ADDITION / ELIMINATION IN THE REACTION BETWEEN ACYL CHLORIDES AND AMMONIA
https://www.chemguide.co.uk/mechanisms/addelim/ammoniatt.html
RE: Hydrogen