Buchler Glossary

Wolff Rearrangement

The Wolff Rearrangement allows the generation of ketenes from α-diazoketones. During this  reaction an α-diazocarbonyl...

Tamura Cyclization

In the presence of a Cinchona squaramide-based catalyst, enolizable anhydrides react with alkylidene oxindoles to...

Biaryls

Biaryl compounds with axial chirality are very common in synthetic chemistry, especially in catalysis. Axially chiral...

Betti Reaction

The three-component reaction of aldehydes, primary aromatic amines, and phenols to produce α-aminobenzylphenols is...

Barton-Zard Reaction

The Barton–Zard reaction is a route to pyrrole derivatives via the reaction of a nitroalkene with an α-isocyanoacetate...

Cinchona Alkaloids

Cinchona alkaloids are complex small molecules containing five stereogenic centers, a basic quinuclidine nitrogen, a...

Allylsilylation

An Allylsilylation is performed between allylsilanes and aldehydes furnishes homo allyl alcohols. Using Cinchona...

Bargellini Reaction

The original reaction (1906) was a mixture of the reagents phenol, chloroform, and acetone in the presence of a sodium...

Optical Rotation

Optical Rotation is the property displayed by chiral substances of rotating the plane of polarisation of polarised...

Nazarov Cyclization

Nazarov Cyclization is one of the most versatile methods for the synthesis of cyclopentenones from vinyl ketones. For...

diastereomeric ratio

The diastereomeric ratio (dr) of the percent of one diastereomer in a mixture to that of the other diastereomer. For...

diastereomeric excess

The diastereomeric excess (de) reflects the degree to which a sample contains one diastereomer in greater amounts than...

enantiomeric ratio

The ratio of the percent of one enantiomer in a mixture to that of the other. Enantiomeric ratio of 7:3 means for...

enantiomeric excess

Enantiomeric excess is a measurement of purity used for chiral substances. It reflects the degree to which a sample...

Chiral Screening Kit

The Buchler chiral screening kit contains a set of slightly different Cinchona alkaloids in very high chemical purity....

Strecker Synthesis

The Strecker amino acid synthesis, also known simply as the Strecker synthesis, is a method for the synthesis of amino...

Sonogashira Coupling

The Sonogashira Reaction is a cross-coupling reaction used in organic synthesis to form carbon–carbon bonds. It...

Reformatsky Reaction

Reformatsky Reaction is an organic reaction which condenses aldehydes or ketones with α-halo esters using metallic...