π-Excess σ 2 P ligands: synthesis of biaryl-type 1, 3-benzazaphosphole hybrid ligands and formation of P^ P′–M (CO) 4 chelate complexes
B Niaz, M Ghalib, PG Jones, JW Heinicke
Index: Niaz, Basit; Ghalib, Mohammed; Jones, Peter G.; Heinicke, Joachim W. Dalton Transactions, 2013 , vol. 42, # 26 p. 9523 - 9532
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Citation Number: 15
Abstract
Acid-catalyzed cyclocondensations of 2-phosphanylanilines 1 with substituted benzaldehydes or heteroaryl aldehydes open a convenient route to new biaryl-type 1 H-1, 3- benzazaphosphole hybrid ligands 2a–f with o-phosphanylphenyl, pyridyl, imidazolyl, thienyl or o-methoxyphenyl donor groups (in addition to the σ 2 P donor) and to bromophenyl substituted benzazaphospholes 2g, h. Excess aldehyde leads to concomitant reductive N- ...
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