Dibenzoyl-L-tartaric acid monohydrate

Dibenzoyl-L-tartaric acid monohydrate

CAS Number: 62708‑56‑9

Synonyms: (−)-Dibenzoyl‑L‑tartaric acid monohydrate; L‑DBTA monohydrate

Chemical Formula:C₂₀H₁₈O₈

Product Introduction

L‑DBTA·H₂O is a white to pale-yellow crystalline monohydrate of tartaric acid esterified with benzoyl groups. It serves as a chiral resolving agent for racemic bases, ligand in asymmetric catalysis, and building block in enantioselective synthesis.

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Physical & Chemical Properties

Property Value
Appearance White to pale-yellow crystalline powder
Purity ≥ 98–99 % (T)
Molecular Weight 376.31 g/mol (monohydrate)
Melting Point 88–89 °C
Water Content ≈1 eq H₂O · ~5 % max
Solubility Soluble in methanol, ethanol; slightly soluble in water
Optical Rotation [α]²⁰ᴅ ≈ –110° to –116° (c = 5, EtOH)

Applications

  • Chiral resolution: Used to resolve racemic amines and tertiary bases.
  • Asymmetric catalysis: Acts as ligand for chiral metal complexes in enantioselective syntheses.
  • Fine chemicals: Useful in pharmaceutical and agrochemical intermediate production.

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