作者:Mohammed Ghalib、Basit Niaz、Peter G. Jones、Joachim W. Heinicke
DOI:10.1016/j.tetlet.2012.07.037
日期:2012.9
A convenient three-step route to 1,5-dimethyl-1,3-benzazaphosphole via Cu- or Pd-catalyzed phosphonylation of 2-iodo-4-methylaniline, reduction to 2-phosphino-4-methylaniline, and disproportionative cyclization with excess formaldehyde is reported. N-Methylbenzazaphospholes can be functionalized in the 2-position via alpha-CH-lithiation with tBuLi and are pi-acidic sigma P-2-ligands. (C) 2012 Elsevier Ltd. All rights reserved.