Matches in SemOpenAlex for { <https://semopenalex.org/work/W1970746106> ?p ?o ?g. }
- W1970746106 endingPage "6411" @default.
- W1970746106 startingPage "6403" @default.
- W1970746106 abstract "The reaction of the heteroscorpionate lithium salts [Li(tbpamd)(THF)] [tbpamd = N-ethyl-N‘-tert-butylbis(3,5-dimethylpyrazol-1-yl)acetamidinate] and [Li(pbpamd)(THF)] [pbpamd = N,N‘-diisopropylbis(3,5-dimethylpyrazol-1-yl)acetamidinate] with 1 equiv of RMgCl proceeds to give very high yields of the neutral heteroscorpionate alkyl magnesium complexes [Mg(R)(NNN)] (NNN = tbpamd, R = C3H5 1, tBu 2, CH2SiMe3 3; NNN = pbpamd, R = C3H5 4, tBu 5, CH2SiMe3 6). On heating toluene solutions of complexes 1−3, 5, and 6, a ligand redistribution process occurs to give the corresponding 6-coordinated sandwich complexes [Mg(tbpamd)2] (7) and [Mg(pbpamd)2] (8). Interestingly, the allyl derivative 4 can be easily transformed to 8 at room temperature. In addition, the cationic sandwich complex [Mg(tbpamdH)2]Cl2 (9) [tbpamdH = N-ethyl-N‘-tert-butylbis(3,5-dimethylpyrazol-1-yl)acetamidine] was obtained from 7 by means of a protonation process. Finally, alkyl-containing complexes 1−6 can act as highly effective single-component living initiators for the ring-opening polymerization of ε-caprolactone and lactides over a wide range of temperatures. ε-Caprolactone is polymerized within seconds to give high molecular weight polymers with narrow polydispersities. Lactide afforded PLA materials with medium molecular weights and polydispersities as narrow as Mw/Mn = 1.05. Additionally, polymerization of l-lactide occurred without racemization in the propagation process and offered highly crystalline, isotactic poly(l-lactides) with high melting temperatures (Tm = 160 °C). Polymer end-group analysis shows that the polymerization process is initiated by alkyl transfer to the monomer." @default.
- W1970746106 created "2016-06-24" @default.
- W1970746106 creator A5033819383 @default.
- W1970746106 creator A5036890138 @default.
- W1970746106 creator A5037645861 @default.
- W1970746106 creator A5045012102 @default.
- W1970746106 creator A5048803040 @default.
- W1970746106 creator A5053068993 @default.
- W1970746106 creator A5065056434 @default.
- W1970746106 creator A5071486260 @default.
- W1970746106 creator A5081833446 @default.
- W1970746106 creator A5088764811 @default.
- W1970746106 date "2007-10-25" @default.
- W1970746106 modified "2023-10-14" @default.
- W1970746106 title "Well-Defined Alkyl Heteroscorpionate Magnesium Complexes as Excellent Initiators for the ROP of Cyclic Esters" @default.
- W1970746106 cites W1837430940 @default.
- W1970746106 cites W1965536851 @default.
- W1970746106 cites W1967984957 @default.
- W1970746106 cites W1981810075 @default.
- W1970746106 cites W1981811972 @default.
- W1970746106 cites W1984928940 @default.
- W1970746106 cites W1985570466 @default.
- W1970746106 cites W1988797207 @default.
- W1970746106 cites W1991648807 @default.
- W1970746106 cites W1993521927 @default.
- W1970746106 cites W1995544346 @default.
- W1970746106 cites W1998465083 @default.
- W1970746106 cites W2007652547 @default.
- W1970746106 cites W2008950486 @default.
- W1970746106 cites W2011856027 @default.
- W1970746106 cites W2013549613 @default.
- W1970746106 cites W2018070397 @default.
- W1970746106 cites W2025491464 @default.
- W1970746106 cites W2028639007 @default.
- W1970746106 cites W2032599043 @default.
- W1970746106 cites W2037682587 @default.
- W1970746106 cites W2041546233 @default.
- W1970746106 cites W2046484756 @default.
- W1970746106 cites W2052816112 @default.
- W1970746106 cites W2058202055 @default.
- W1970746106 cites W2067017722 @default.
- W1970746106 cites W2069515982 @default.
- W1970746106 cites W2072840683 @default.
- W1970746106 cites W2073294903 @default.
- W1970746106 cites W2082189380 @default.
- W1970746106 cites W2082264584 @default.
- W1970746106 cites W2085312983 @default.
- W1970746106 cites W2088130023 @default.
- W1970746106 cites W2090195282 @default.
- W1970746106 cites W2092337099 @default.
- W1970746106 cites W2092445176 @default.
- W1970746106 cites W2092999693 @default.
- W1970746106 cites W2094777181 @default.
- W1970746106 cites W2123608977 @default.
- W1970746106 cites W2160466249 @default.
- W1970746106 cites W2170498612 @default.
- W1970746106 cites W4211147424 @default.
- W1970746106 cites W4239299913 @default.
- W1970746106 doi "https://doi.org/10.1021/om7007327" @default.
- W1970746106 hasPublicationYear "2007" @default.
- W1970746106 type Work @default.
- W1970746106 sameAs 1970746106 @default.
- W1970746106 citedByCount "105" @default.
- W1970746106 countsByYear W19707461062012 @default.
- W1970746106 countsByYear W19707461062013 @default.
- W1970746106 countsByYear W19707461062014 @default.
- W1970746106 countsByYear W19707461062015 @default.
- W1970746106 countsByYear W19707461062016 @default.
- W1970746106 countsByYear W19707461062017 @default.
- W1970746106 countsByYear W19707461062018 @default.
- W1970746106 countsByYear W19707461062019 @default.
- W1970746106 countsByYear W19707461062020 @default.
- W1970746106 countsByYear W19707461062021 @default.
- W1970746106 countsByYear W19707461062022 @default.
- W1970746106 countsByYear W19707461062023 @default.
- W1970746106 crossrefType "journal-article" @default.
- W1970746106 hasAuthorship W1970746106A5033819383 @default.
- W1970746106 hasAuthorship W1970746106A5036890138 @default.
- W1970746106 hasAuthorship W1970746106A5037645861 @default.
- W1970746106 hasAuthorship W1970746106A5045012102 @default.
- W1970746106 hasAuthorship W1970746106A5048803040 @default.
- W1970746106 hasAuthorship W1970746106A5053068993 @default.
- W1970746106 hasAuthorship W1970746106A5065056434 @default.
- W1970746106 hasAuthorship W1970746106A5071486260 @default.
- W1970746106 hasAuthorship W1970746106A5081833446 @default.
- W1970746106 hasAuthorship W1970746106A5088764811 @default.
- W1970746106 hasConcept C145148216 @default.
- W1970746106 hasConcept C151286553 @default.
- W1970746106 hasConcept C155647269 @default.
- W1970746106 hasConcept C178790620 @default.
- W1970746106 hasConcept C183882617 @default.
- W1970746106 hasConcept C185592680 @default.
- W1970746106 hasConcept C188027245 @default.
- W1970746106 hasConcept C203897987 @default.
- W1970746106 hasConcept C2776743539 @default.
- W1970746106 hasConcept C2780263894 @default.
- W1970746106 hasConcept C30095370 @default.
- W1970746106 hasConcept C44228677 @default.