English: This scheme depicts the general mechanistic steps of HBTU creating an activated HOBt ester out of the carboxylate anion of the acid substrate. The deprotination of the carboxylic acid and the aminolysis of the activated ester are not shown.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.