Reaktion #323402

ord-e88375e22db7491381c44d47cb8c1b75

Reaktionsgleichung

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

Edukte

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

Reagenzien

CCCCC(CC)C(=O)[O-].CCCCC(CC)C(=O)[O-].[Sn+2]
stannous octoate

Reaktionsbedingungen

Detaillierte Bedingungen
See reaction.notes.procedure_details.

Aufarbeitung

  1. 1
    Sonstigeare blanketed with dry nitrogen in a glass flask
  2. 2
    Temperaturheated for 45 hours at 140° to 142° C

Vorschrift

The procedure of Example II is repeated except that 15 grams of L-(-)-lactide, 35 grams of epsilon caprolactone and 0.0105 grams of pure stannous octoate catalyst are blanketed with dry nitrogen in a glass flask and heated for 45 hours at 140° to 142° C. The copolymer is tough and elastic and has good tensile strength and elongation properties. The copolymer has

Quelle

DOI: 10.6084/m9.figshare.5104873.v1Patent: US04643734uspto-grants-1987_02