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[2+2]‐Cycloaddition vo Iminoboranen mit einem Neopentylidentantal‐Komplex
Author(s) -
Braunschweig Holger,
Paetzold Peter,
Boese Roland
Publication year - 1990
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19901230313
Subject(s) - chemistry , cycloaddition , crystal structure , stereochemistry , medicinal chemistry , crystallography , catalysis , organic chemistry
[2 + 2] Cycloaddition of Iminoboranes to a Neopentylidenetantalum Complex The neopentylidene complex(η‐Cp)cl 2 Ta=CH t Bu ( 1 ) and the iminoboranes R′B≡NR ( 2a – d , R′/R = Et/ t Bu, Bu/ t Bu, i Bu/ i Bu, Ph/ t Bu) undergo a [2 + 2] cycloaddition yielding the corresponding 1‐aza‐2‐bora‐4‐tantalacyclobutanes 3a – d . The crystal and molecular structure of 3c is reported.