Alkene anti-Dihydroxylation with Malonoyl Peroxides

Area of Science:

• Organic Chemistry
• Synthetic Chemistry

Background:

• Dihydroxylation is a key transformation in organic synthesis.
• Existing methods for anti-dihydroxylation often lack efficiency or selectivity.

Purpose of the Study:

• To develop a novel reagent for the anti-dihydroxylation of alkenes.
• To achieve high yields and stereoselectivity in the synthesis of diols.

Main Methods:

• Synthesis of malonoyl peroxide (1) in a single step from a commercially available diacid.
• Reaction of malonoyl peroxide (1) with various alkenes in acetic acid at 40 °C.
• Alkaline hydrolysis of the reaction intermediate to yield the final diol product.

Main Results:

• Malonoyl peroxide (1) demonstrated effectiveness as an anti-dihydroxylation reagent.
• Yields for the corresponding diols ranged from 35-92%.
• High anti-selectivity was observed, with ratios up to 13:1.

Conclusions:

• Malonoyl peroxide (1) is a highly effective reagent for the anti-dihydroxylation of alkenes.
• The proposed mechanism explains the observed stereoselectivity.
• This method provides a facile route to synthetically useful diols.