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HRID846536

反应详情

EQUATION

反应方程式

HRID 846536 的结构方程式

REACTANTS

反应物

2
结构：CC(C)C1=CC2=CC[C@@H]3[C@](C)(CCC[C@@]3(C)C(=O)O)[C@H]2CC1
HCID10569

Abietic acid

C20H30O2

结构：OC[C@H]1O[C@@H](OC/C=C/c2ccccc2)[C@H](O)[C@@H](O)[C@@H]1O
HCID5280656

(E)-3-phenyl-2-propenyl beta-D-glucopyranoside

C15H20O6

3 次

PRODUCTS

生成物

4
结构：CC(C)C1=CC[C@H]2C(=C1)CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C(=O)O
HCID221062

Levopimaric acid

C20H30O2

结构：CC(C)=C1C=C2CC[C@@H]3[C@](C)(CCC[C@@]3(C)C(=O)O)[C@H]2CC1
HCID221118

Neoabietic acid

C20H30O2

结构：CC(C)C1=CC2=C(CC1)[C@@]1(C)CCC[C@@](C)(C(=O)O)[C@@H]1CC2
HCID443613

Palustric acid

C20H30O2

结构：OC[C@H]1O[C@@H](OC/C=C/c2ccccc2)[C@H](O)[C@@H](O)[C@@H]1O
HCID5280656

(E)-3-phenyl-2-propenyl beta-D-glucopyranoside

C15H20O6

PROCEDURE

实验过程

Rosin from the species pinus halepensis was analyzed for content of various types of rosin acids. The rosin had an abietic acid content of 35%, a neoabietic acid content of 15%, a palustric acid content of 17.5% and a levopimaric acid content of 12.5% giving a total of rosin acids having conjugated double bonds of 80%. The rosin was dissolved in toluene to form a 25 to 30% solution. To the solution was added concentrated sulphuric acid, with stirring and cooling. Over 2 hours the temperature rose to 40°-45° C. then fell to about 30° C. The organic and acid phases separated and the organic phase was drawn off. The solvent was removed to yield a hard dimerized rosin having a softening point of from 125° to 130° C.