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Synthesis and Deprotonation of Aminophosphane Complexes: First K/N(H)R Phosphinidenoid Complexes and Access to a Complex with a P 2 N‐Ring Ligand
Author(s) -
Majhi Paresh Kumar,
Kyri Andreas Wolfgang,
Schmer Alexander,
Schnakenburg Gregor,
Streubel Rainer
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201600850
Subject(s) - deprotonation , chemistry , ligand (biochemistry) , ring (chemistry) , bifunctional , stereochemistry , potassium , molar ratio , medicinal chemistry , crystal structure , crystallography , organic chemistry , catalysis , ion , biochemistry , receptor
Synthesis of 1,1′‐bifunctional aminophosphane complexes 3 a–e was achieved by the reaction of Li/Cl phosphinidenoid complex 2 with various primary amines (R=Me, i Pr, t Bu, Cy, Ph). Deprotonation of complex 3 a (R=Me) with potassium hexamethyldisilazide yielded a mixture of K/NHMe phosphinidenoid complex 4 a and potassium phosphanylamido complex 4 a′ . Treatment of complex 3 c (R= t Bu) and e (R=Ph) with KHMDS afforded the first examples of K/NHR phosphinidenoid complexes 4 c and e . The reaction of complex 3 c with 2 molar equivalents of KHMDS followed by PhPCl 2 afforded complexes 5 c,c′ , which possess a P 2 N‐ring ligand. All complexes were characterized by NMR, IR, MS, and microanalysis, and additionally, complexes 3 b – e and 5 c′ were scrutinized by single‐crystal X‐ray crystallography.