| Literature DB >> 20165799 |
Parminder Kaur1, Gaurav Shakya, Hao Sun, Yi Pan, Guigen Li.
Abstract
A variety of substituted chiral propargylamines have been synthesized by reacting chiral N-phosphonylimines with lithium aryl/alkyl acetylides. Seventeen examples were studied to give excellent yields (>90%) and diastereoselectivities (96 : 4 to 99 : 1). It was found that the types of bases for generating acetylides and solvents are crucial for effectiveness of this asymmetric reaction. In addition, N,N-isopropyl group on chiral N-phosphonylimine auxiliary was proven to be superior to other protecting groups in controlling diastereoselectivity.Entities:
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Year: 2010 PMID: 20165799 DOI: 10.1039/b923914f
Source DB: PubMed Journal: Org Biomol Chem ISSN: 1477-0520 Impact factor: 3.876