Stereoselective Formation of or Z Boron Enolates

A 250-mL round-bottomed flask capped with a rubber septum, containing a magnetic stirring bar and a connecting tube attached to a mercury bubbler was kept at 0 °C and charged with hexane (100 mL) and c-Hex2BH (26.7 g. [Pg.131]

Stereoselective formation of syn and anti aldols via (Z) and (E) boron enolates. [Pg.132]

2 Crossed Aldol Reactions Using Boron Enolates 133 O OH R [Pg.133]

Stereoselective formation of (Z) or (E) boron enolates of carboxylic esters. [Pg.133]

Typical Experimental Procedure for Crossed Aldol Reaction via Boron Enolate (Eq. (7)) [6a] [Pg.133]

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