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Enantioselective Addition of Boronates to Chromene Acetals Catalyzed by a Chiral Brønsted Acid/Lewis Acid System

✍ Scribed by Philip N. Moquist; Dr. Tomohiro Kodama; Prof. Dr. Scott E. Schaus

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
484 KB
Volume
49
Category
Article
ISSN
0044-8249

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✦ Synopsis

Scheme 1. Natural product benzopyrans.

📜 SIMILAR VOLUMES

Enantioselective Mannich-Type Reaction C
Enantioselective Mannich-Type Reaction Catalyzed by a Chiral Brønsted Acid Derived from TADDOL
✍ Takahiko Akiyama; Youichi Saitoh; Hisashi Morita; Kohei Fuchibe 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 83 KB

## Abstract A novel cyclic dialkyl phosphate was synthesized starting from (+)‐diethyl tartrate. Its catalytic activity as a chiral Brønsted acid has been examined in the Mannich‐type reaction of a ketene silyl acetal with aldimines as a model reaction. The corresponding β‐amino acid esters were ob