epsilon-CAPROLACTONE → D,D-Dilactide

HRID 1379568ノート

反応式

HRID 1379568 の反応式
[CH3:1][C@@H:2]1[O:9][C:7](=[O:8])[C@H:6]([CH3:10])[O:5][C:3]1=[O:4].C1(=O)OCCCCC1>CCCCC(C([O-])=O)CC.CCCCC(C([O-])=O)CC.[Sn+2]>[CH3:1][C@H:2]1[O:9][C:7](=[O:8])[C@@H:6]([CH3:10])[O:5][C:3]1=[O:4]

参加物

4

反応物 2

HCID 10401epsilon-CAPROLACTONEHCID 107983Lactide, L-

生成物 1

HCID 5325924D,D-Dilactide

試薬・触媒・溶媒 1

HCID 93182-ethylhexanoic acid tin(II) salt触媒2 回

反応条件

温度
150 °C

実験手順

An amorphous, non-crystallizable copolymer of 80 mol. % L-lactide and 20 mol. % D-lactide was prepared by ring-opening polymerisation in the melt, in the presence of 0.1% by weight tin octoate as catalyst. To this polymer was added an amount of 20% by weight of ε-caprolactone, whereafter, under nitrogen and with continuous mechanical stirring, the mixture was heated to 150° C. To the homogeneous mixture, again 0.1% by weight tin octoate as catalyst was added, whereafter the polymerisation was completed.

出典と根拠

ORDレコード
ord-19110a7bb1be46349de6df1eacabbfa2
出典データセット
uspto-grants-1997_09
特許番号
US05672367

反応ノート

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