1981
DOI: 10.1021/jo00322a010
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Structure of anhydroacetylsalicylamide

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1981
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Cited by 9 publications
(2 citation statements)
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“…A half-life of 2.4 days was observed for 5 (25OC, CD&N), and similarly slow transfer was observed for the sulfenamide 6. 9 It was hoped that the imine nucleophilicity of 7 would be increased sufficiently by a p-oxyanion to form 8, which is structurally similar to the nonbenzenoid phloroglucinol dianion, but no efficient transfer was observed (D. Kemp and G. Hanson, unpublished observations). We considered the possibility of using special amino acids bearing N-heteroatoms.…”
Section: Amide Formation Preceded By Trapping Of the N-terminal Aminmentioning
confidence: 99%
“…A half-life of 2.4 days was observed for 5 (25OC, CD&N), and similarly slow transfer was observed for the sulfenamide 6. 9 It was hoped that the imine nucleophilicity of 7 would be increased sufficiently by a p-oxyanion to form 8, which is structurally similar to the nonbenzenoid phloroglucinol dianion, but no efficient transfer was observed (D. Kemp and G. Hanson, unpublished observations). We considered the possibility of using special amino acids bearing N-heteroatoms.…”
Section: Amide Formation Preceded By Trapping Of the N-terminal Aminmentioning
confidence: 99%
“…Our purpose in synthesizing and characterizing Bpoc-Xxx-OPfp esters is to attempt to make solidphase peptide synthesis with Bpoc-amino acid derivatives a more facile undertaking. In prior work (6,(9)(10)(11)(12)(13)(14)(15)(16), the application of Bpoc-amino acids to solidphase peptide synthesis was done by first preparing and storing the cyclohexyl-or dicyclohexylamine salts of each derivative, which then had to be liberated 570 from the salt and activated prior to each coupling.' Although active esters of Bpoc-amino acids were prepared and stored for use in the solution-phase peptide syntheses listed above, the choice of active ester (usually hydroxysuccinimide, nitrophenyl, 2,3,5-trichlorophenyl or pentachlorophenyl) (2-5, [17][18][19] was not optimally efficient for application to solid-phase synthesis.…”
mentioning
confidence: 99%