title: Concerning the relative importance of enantiomorphic site vs. chain end control in the stereoselective polymerization of lactides: reactions of (R,R-salen)- and (S,S-salen)-aluminium alkoxides LAlOCH2R complexes (R = CH3 and S-CHMeCl).
abstract: The preparations and structures of LAlOCH(2)C(S)HMeCl, where L = (R,R) or (S,S)-N,N'-bis(3,5-di-tert-butyl-salicylidene)-1,2-cyclohexenediamino, are reported together with the respective LAlOEt compounds, and their reactivities toward L- and rac-lactides in various solvents reveal the surprising complexity of the stereopreference for the ring-opening event.
authors.affiliation: Department of Chemistry, The Ohio State University, 100 W 18th Ave., Columbus, Ohio 43210, USA. chisholm@chemistry.ohio-state.edu
authors.forename: Malcolm H
authors.initials: MH
authors.lastname: Chisholm
authors.forename: Nathan J
authors.initials: NJ
authors.lastname: Patmore
authors.forename: Zhiping
authors.initials: Z
authors.lastname: Zhou
mesh_terms: D000535:Aluminum / Q000737:chemistry; D009942:Organometallic Compounds / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry; D011091:Polyesters / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry; D013237:Stereoisomerism
chemical_list: D009942:Organometallic Compounds; D010087:Oxides; D011091:Polyesters; D012997:Solvents; C033616:poly(lactide); D000535:Aluminum