Molecules 2012, 17
10190
26. Bernatowics, M.S. 1H-Pyrazyle-1-carboxamidine Hydrochloride. In Encyclopedia of Reagents for
Organic Synthesis; Paquette, L.D., Ed.; Wiley: Sussex, UK, 1995; pp. 4343–4344.
27. Linton, B.R.; Carr, A.J.; Orner, B.P.; Hamilton, A.D. A Versatile one-pot synthesis of
1,3-substituted guanidines from carbamoyl isothiocyanates. J. Org. Chem. 2000, 65, 1566–1568.
28. Manimala, J.C.; Anslyn, E.B. Solid-phase synthesis of guanidinium derivatives from thiourea and
isothiourea functionalities. Eur. J. Org. Chem. 2002, 2002, 3909–3922.
29. Bowser, A.M.; Madalengoitia, J.S. A 1,3-Diaza-Claisen rearrangement that affords guanidines.
Org. Lett. 2004, 6, 3409–3412.
30. McAlpine, I.J.; Armstrong, R.W. Stereoselective synthesis of a tricyclic guanidinium model of
cylindrospermopsin. Tetrahedron Lett. 2000, 41, 1849–1853.
31. Santagada, V.; Fiorino, F.; Severino, B.; Salvadori, S.; Lazarus, L.H.; Bryant, S.D.; Caliendo, G.
A convenient synthesis of N-Fmoc-N,N′-bis-Boc-7-guanyl-1,2,3,4-tetrahydro-isoquinoline-3-carboxylic
acid (Fmoc-N,N′-bis-Boc-7-guanyl-Tic-OH, GTIC). Tetrahedron Lett. 2001, 42, 3507–3509.
32. De Mong, D.E.; Williams, R.M. The asymmetric synthesis of (2S,3R)-capreomycidine.
Tetrahedron Lett. 2001, 42, 3529–3532.
33. Nagasawa, K.; Koshino, H.; Nakata, T. Stereoselective synthesis of tricyclic guanidine systems:
confirmation of the stereochemistry of batzelladine F left-hand tricyclic guanidine portion.
Tetrahedron Lett. 2001, 42, 4155–4158.
34. Ghosh, A.K.; Hol, W.G.J.; Fan, E. Solid-phase synthesis of N-acyl-N'-alkyl/aryl disubstituted
guanidines. J. Org. Chem. 2001, 66, 2161–2164.
35. Powell, D.A.; Phillip, D.; Ramsden, P.D.; Batey, R.A. Phase-transfer-catalyzed alkylation of
guanidines by alkyl halides under biphasic conditions:Ԝ A convenient protocol for the synthesis of
highly functionalized guanidines. J. Org. Chem. 2003, 68, 2300–2309.
36. Yong, Y.F.; Kowalski, J.A.; Lipton, M.A. A new reagent for solid and solution phase synthesis of
protected guanidines from amines. Tetrahedron Lett. 1999, 40, 53–56.
37. Gers, T.; Kunce, D.; Markowski, P.; Izdebski, J. Reagents for efficient conversion of amines to
protected guanidines. Synthesis 2004, 37–42.
38. Cunha, S.; Rodriguez, M.T., Jr. The first bismuth(III)-catalyzed guanylation of thioureas.
Tetrahedron Lett. 2006, 47, 6955–6956.
39. Porcheddu, A.; Giacomelli, G.; Chinghine, A.; Masala, S. New cellulose-supported reagent:Ԝ
A sustainable approach to guanidines. Org. Lett. 2004, 6, 4925–4927.
40. Deprez, P.; Vevert, J.P. Efficient two-step syntheses of sulfonylguanidines from sulfonamides.
Synth. Commun. 1996, 26, 4299–4310.
41. Levallet, C.; Lerpiniere, J.; Ko, S.Y. The HgCl2-promoted guanylation reaction: The scope and
limitations. Tetrahedron 1997, 53, 5291–5304.
42. Atwal, K.S.; Ahmed, S.Z.; O’Reilly, B.C. A facile synthesis of cyanoguanidines from thioureas.
Tetrahedron Lett. 1989, 30, 7313–7316.
43. Wilson, L.J.; Klopfenstein, S.R.; Li, M. A traceless linker approach to the solid phase synthesis of
substituted guanidines utilizing a novel acyl isothiocyanate resin. Tetrahedron Lett. 1999, 40,
3999–4002.
44. Wang, H.; Ye, C.; Jin, H.; Liu, J.; Wu, J. An expeditious approach to 1-(isoquinolin-1-
yl)guanidines via a three-component reaction of 2-alkynylbenzaldehyde, sulfonohydrazide, with
carbodiimide. Tetrahedron 2011, 67, 5871–5877.