Lipase-catalyzed Kinetic Resolution of (±)-cis,cis-Spiro[4.4]nonane-1,6-diol.

Area of Science:

• Organic Chemistry
• Biocatalysis
• Chiral Synthesis

Background:

• Axially chiral spirocyclic compounds are valuable building blocks in organic synthesis.
• Efficient methods for resolving these compounds are crucial for accessing enantiomerically pure forms.

Purpose of the Study:

• To develop an efficient method for the resolution of (±)-cis,cis-Spiro[4.4]nonane-1,6-diol.
• To explore the utility of lipase-catalyzed enantioselective esterification for resolving axially chiral spirocycles.

Main Methods:

• Lipase-catalyzed enantioselective esterification of (±)-cis,cis-Spiro[4.4]nonane-1,6-diol.
• Use of diisopropyl ether as the reaction solvent.

Main Results:

• The lipase-catalyzed esterification efficiently resolved the target diol.
• High enantioselectivity was achieved in the esterification process.

Conclusions:

• Lipase-catalyzed enantioselective esterification is a viable and efficient method for resolving axially chiral spirocycles.
• This approach offers a practical route to enantiomerically pure (±)-cis,cis-Spiro[4.4]nonane-1,6-diol.