Synthesis of high-molecular-weight poly(ε-caprolactone) catalyzed by highly active bis(amidinate) tin(II) complexes.
A series of bis(amidinate) tin(II) complexes is synthesized and shown to rapidly polymerize ε-caprolactone (ε-CL) in the presence and absence of benzyl alcohol giving high-molecular-weight poly(ε-CL) (M(n) up to 160,600 Da). Ligands having electron donating groups were found to accelerate the polymerization by making the complex more nucleophilic.
Center for Catalysis, Department of Chemistry, Faculty of Science, Mahidol University, Bangkok, Thailand.
Khamphee
K
Phomphrai
Chatyapha
C
Pongchan-o
Wipavee
W
Thumrongpatanaraks
Preeyanuch
P
Sangtrirutnugul
Palangpon
P
Kongsaeree
Manat
M
Pohmakotr
D002384:Catalysis; D056831:Coordination Complexes / Q000138:chemical synthesis / Q000737:chemistry*; D011091:Polyesters / Q000138:chemical synthesis* / Q000737:chemistry; D058105:Polymerization; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; D014001:Tin / Q000737:chemistry*
D056831:Coordination Complexes; D011091:Polyesters; C016240:polycaprolactone; D014001:Tin