Formation of chiral 4-chromanones using chiral pyrrolidines in the presence of phenols or thiophenols
摘要:
The present invention relates to a synthesis of chromanones or chromanes in a stereospecific matter in view of the 2-position in the chromanone or chromane ring. It has been found that this synthesis is particularly possible in the presence of a chiral compound of formula of a specific type and of at least one phenol or thiophenol.
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