Takenaka K, Lin X, Takizawa S, Sasai H. Structural Features and Asymmetric Environment of i-Pr-SPRIX Ligand.
Chirality 2015;
27:532-7. [PMID:
26096770 DOI:
10.1002/chir.22467]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2015] [Revised: 04/14/2015] [Accepted: 04/15/2015] [Indexed: 11/06/2022]
Abstract
Novel chiral diisopropyl spiro bis(isoxazoline) ligands, anti-i-Pr-SPRIX and syn-i-Pr-SPRIX, were designed and synthesized. Their catalytic utility, X-ray crystallographic analyses, and complexation studies demonstrated the structural features of tetraisopropyl spiro bis(isoxazoline) ligand, i-Pr-SPRIX, which is a prominent ligand in various enantioselective Pd catalytic processes: All i-Pr groups work in collaboration to create an effective asymmetric environment.
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