title: Dimethylaluminium iminophosphoranylenamides and iminophosphoranylanilides: synthesis, characterisation, and their controlled ring-opening polymerisation of ε-caprolactone.
abstract: A series of aluminium iminophosphoranylenamide complexes, [Me(2)Al{N(Ar)C(Ph)=CHP(Ph(2))=N-Ar(1)}] (Ar = Ph, Ar(1) = p-MeC(6)H(4) (9); Ar = Ph, Ar(1) = o-ClC(6)H(4) (10); Ar = Ph, Ar(1) = o-FC(6)H(4) (11); Ar = p-MeC(6)H(4), Ar(1) = o-FC(6)H(4) (12)), were synthesised by the reactions of ArN=C(Ph)CH(2)P(Ph(2))=NAr(1) (5-8) with AlMe(3) in toluene. Similar reactions between o-{ArN=P(Ph(2))}C(6)H(4)NHC(Ph)=CHP(Ph(2))=NAr (Ar = p-MeC(6)H(4), 13), and AlMe(3) in toluene generates aluminium iminophosphoranylanilide, 14. All new compounds were characterised by NMR spectroscopy and elemental analysis. The molecular structures of complexes 9 and 14 were further characterised by single-crystal X-ray structure determination. In the presence of benzyl alcohol (BnOH) each of the complexes is catalytically active for the ring-opening polymerisation (ROP) of ε-caprolactone (ε-CL), and complex 14 has the highest activity among them.
authors.affiliation: CAS Key Laboratory of Soft Matter Chemistry, Joint Laboratory of Green Synthetic Chemistry and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.
authors.forename: Wen-An
authors.initials: WA
authors.lastname: Ma
authors.forename: Li
authors.initials: L
authors.lastname: Wang
authors.forename: Zhong-Xia
authors.initials: ZX
authors.lastname: Wang
mesh_terms: D000535:Aluminum / Q000737:chemistry*; D000577:Amides / Q000737:chemistry*; D000813:Anilides / Q000737:chemistry*; D019905:Benzyl Alcohol / Q000737:chemistry; D002208:Caproates / Q000737:chemistry*; D056831:Coordination Complexes / Q000138:chemical synthesis* / Q000737:chemistry; D018360:Crystallography, X-Ray; D007783:Lactones / Q000737:chemistry*; D008968:Molecular Conformation; D058105:Polymerization
chemical_list: D000577:Amides; D000813:Anilides; D002208:Caproates; D056831:Coordination Complexes; D007783:Lactones; C121056:caprolactone; D000535:Aluminum; D019905:Benzyl Alcohol