... ALDEHY UE COMPONENTS FOR USE IN FOUR-COMPONENT CONDENSATION ("4CC") UGI REACTION PEPTIDE SYNTHESIS Charles F. Hoyng* and Arvind 0, Pate1 Department of Chemistry, Texas A&M University College Station, Texas 77843 Abstract: The use of 9-formylfluorene as the aldehyde component in ... The reaction solvent was evaporated at reduced pressure and the evaporation residue was dissolved in 25 mL ,>f chloro- 4795 Page 2. ...