V. Janout et al., N-[O-1,2,3-benzotriazin-4(3H)one-yl]-3,(2-pyridyldithio)propionate a more reactive alternative to SPDP, TETRAHEDR L, 40(6), 1999, pp. 1107-1108
N-[O-1,2,3-Benzotriazin-4(3H)one-yl]-3-(2-pyridyldithio)propionate [BPDP] h
as been synthesized and found to react with secondary amines to give high y
ields of acylated product. In sharp contrast, the widely used heterobifunct
ional coupling reagent, N-[O-succinimdyl]-3-(2-pyridyldithio) propionate [S
PDP] afforded low to negligible yields of product. (C) 1999 Elsevier Scienc
e Ltd. All rights reserved.