ChemInform Abstract: “One-Pot” Access to 4H-Chromenes with Formation of a Chiral Quaternary Stereogenic Center by a Highly Enantioselective Iminium-Allenamine Involved Oxa-Michael—Aldol Cascade.

✍ Scribed by Chunliang Liu; Xinshuai Zhang; Rui Wang; Wei Wang

• Publisher: John Wiley and Sons
• Year: 2011
• Weight: 38 KB
• Volume: 42
• Category: Article
• ISSN: 0931-7597
• DOI: 10.1002/chin.201109146

✦ Synopsis

Abstract

Even alkyl alkynals (IV) are converted with excellent enantioselectivities using higher catalyst loading and a longer reaction time.