Bifunctional Homoallylic Carbamates from Chiral Silane Additions to in Situ Generated N-Acyl Iminium Ions

[摘要]：Homoallylic carbamates bearing an alpha,beta-unsaturated ester or an allylic carbonate were generated respectively utilizing novel chiral silanes through Lewis acid promoted asymmetric aminocrotylation. Those bifunctional building blocks could further undergo Michael addition or cyclization to selectively form functionalized lactams, azetidines, and tetrahydropyrimidinones.

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