Table 3 Alternating copolymerization of epoxides and isolated cyclic anhydrides.

From: Tandem synthesis of alternating polyesters from renewable resources

Entry

Complex

Anhydride

Epoxide

[PPNCl]/[M]

[A]/[E]

Temperature (°C)

Time (h)

Yield* (%)

Mn† (g mol−1)

PDI†

1

1

SA

PO

1

13.5

30

8.5

88

6300

1.1

2

1

GA

PO

1

13.5

30

6.5

72

4400

1.6

  1. Abbreviation: GA, glutaric anhydride.
  2. All reactions performed with [anhydride]/[M]=100.
  3. *As determined by the integration of 1H NMR.
  4. †Mn and PDI (Mw/Mn) of the polymer determined by SEC-RI in tetrahydrofuran at room temperature using polystyrene standards.
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