作者: Tetsuo Iwasawa , Paul Wash , Christoph Gibson , Julius Rebek
DOI: 10.1016/J.TET.2007.03.075
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摘要: Abstract The reaction of carboxylic acids with carbodiimides is reviewed, and an ‘introverted’ acid proposed as a means trapping reactive intermediates along the pathway. introverted cavitand function directed toward floor cavity. Its diisopropyl carbodiimide gives covalent adduct that either elusive O -acylisourea or commonly encountered N -acylurea.