Reaction #50429

ord-8bd64f4ff23f4f9898dd95212128cc50

Reaction equation

C[C@@H]1OC(=O)[C@H](C)OC1=O
L-lactide
O=C1CCCCCO1
ε-caprolactone
→
CC(O)C(=O)O.CCCCC(O)C(=O)O
lactic acid hydroxycaproic acid

Reactants

C[C@@H]1OC(=O)[C@H](C)OC1=O
L-lactide
O=C1CCCCCO1
ε-caprolactone

Reagents

None

Conditions

Detailed conditions
See reaction.notes.procedure_details.

Workup

  1. 1
    OtherThe same procedure as in Preparation Example 4

Procedure

The same procedure as in Preparation Example 4 was effected except that 6 mols of L-lactide and 14 mols of ε-caprolactone were used, thereby obtaining a lactic acid-hydroxycaproic acid copolymer (hereinafter referred to as "PCLA2"). This PCLA2 had a weight average molecular weight of 72000, and a molar ratio of a lactic acid unit to a hydroxycaproic acid unit in the copolymer was 33 to 67.

Source

DOI: 10.6084/m9.figshare.5104873.v1Patent: USRE034984uspto-grants-1995_06