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Bis(2‐cycloazylindolyl)titanium Complexes: Synthesis, Characterization, and the Catalytic Behaviors towards Hydroamination and Ring‐opening Polymerization of ϵ‐Caprolactone
Author(s) -
Zhao JingJing,
Pei Hao,
Chen YanMei,
Lu Ning,
Liu JinNa,
Hu JinFa,
Liu Wei,
Li Wu,
Li Yahong
Publication year - 2015
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201500072
Subject(s) - hydroamination , chemistry , titanium , polymerization , tetrahydrofuran , ring opening polymerization , catalysis , ring (chemistry) , indole test , polymer chemistry , intermolecular force , caprolactone , selectivity , stereochemistry , organic chemistry , molecule , polymer , solvent
The ligands 2‐pyrazol‐1‐yl‐1H‐indole (HL1) and 2‐1,2,4‐triazol‐1‐yl‐1H‐indole (HL2) individually reacted with Ti(NMe 2 ) 4 in tetrahydrofuran to form the corresponding complexes Ti(L1) 2 (NMe 2 ) 2 ( 1 ) and Ti(L2) 2 (NMe 2 ) 2 ( 2 ), respectively. The titanium complexes were fully characterized by NMR measurement and elemental analysis as well as the single‐crystal X‐ray diffraction of 1 and 2 . Both 1 and 2 exhibit high activities towards intermolecular hydroamination of terminal alkynes with high selectivity, and they also efficiently promote the ring‐opening polymerization of ϵ‐caprolactone.