Peptide synthesis using unprotected amino acids and novel imidoyl halide reagents

AF Hegarty, DG McCarthy

Index: Hegarty, A. F.; McCarthy, D. G. Journal of the American Chemical Society, 1980 , vol. 102, # 13 p. 4537 - 4538

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Citation Number: 10

Abstract

S= single excitation, D= double excitation, and Q= quadruple excitation. Reference 15. plex has to pass over a substantial energy barrier to complete the reaction, and this should be the rate-determining step for the overall reaction. The calculated SCF overall barriers of 11.7 (4- 31G) and 6.7 (6-31G**) kcal/mol are, as expected, too large, compared with a gas-phase experimental estimate (2 f 3 kcal/mol) 15 determined indirectly from an Arrhenius plot of ...