Synthesis and diastereoselective functionalisation of tricarbonyl[(3a,7a)-octahydro-3-substituted-2-(η6-phenyl)benzoxazole]chromium(0) complexes-Science-Chemical Encyclopedia-lookchem

Synthesis and diastereoselective functionalisation of tricarbonyl[(3a,7a)-octahydro-3-substituted-2-(η6-phenyl)benzoxazole]chromium(0) complexes
Add time:07/15/2019 Source:sciencedirect.com

Two novel tricarbonyl[(3a,7a)-octahydro-3-substituted-2-(η6-phenyl)benzoxazole]chromium(0) complexes have been synthesised in excellent yield and characterised by X-ray crystallography. Treatment of complex 1 with butyllithium followed by electrophile quench (MeI, MeSSMe, Me3SiCl, Me3SnCl, Ph2PCl, PhCH2Br, PhCHO) gave 1,2-disubstituted (η6-arene)Cr(CO)3 complexes in excellent yield, by completely diastereoselective ortho-deprotonation. The structures of the products 5 and 10 have been established by X-ray crystallographic analyses.

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