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Lithium tert ‐Butyl[phenyl(2,2,6,6‐tetramethylpiperidino)boryl]amide: A Versatile Reagent
Author(s) -
Braun Ulrike,
Habereder Tassilo,
Nöth Heinrich
Publication year - 2004
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200400161
Subject(s) - chemistry , medicinal chemistry , lithium (medication) , lithium amide , borane , amide , intramolecular force , reagent , halide , indane , stereochemistry , organic chemistry , catalysis , endocrinology , medicine , enantioselective synthesis
A new synthesis of tmp(PhB)N( t BuNLi) ( 1 , tmp = 2,2,6,6‐tetramethylpiperidino) is presented. Compound 1 reacts with many group 13−15 halides, as well as with BH 3 ·THF, to afford, in most cases, compounds of the type tmp(PhB)N t Bu−ER n −1 (E = B, Al, Ga, In, Ge, Sn, P, As, Sb, and R = H, Me, Hal). The borane, alane, gallane and indane derivatives have cyclic structures, as shown by X‐ray structure determinations, whereas ER n −1 = GeCl 3 , SnMe 3 , SnMe 2 Cl, SnCl, catecholatophosphanyl, AsCl 2 and SbCl 2 are noncyclic, although the arsane and stibane derivatives show weak intramolecular E−N coordination to the tmp−N atom. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)