DDQ-promoted dehydrogenation from natural rigid polycyclic acids or flexible alkyl acids to generate lactones by a radical ion mechanism.

DDQ-promoted dehydrogenation from natural rigid polycyclic acids or flexible alkyl acids to generate lactones by a radical ion mechanism.

Chemical communications (Cambridge, England) (2011-07-19)

Ye Ding, Zhangjian Huang, Jian Yin, Yisheng Lai, Shibo Zhang, Zhiguo Zhang, Lei Fang, Sixun Peng, Yihua Zhang

RÉSUMÉ

A novel and facile DDQ-mediated dehydrogenation from natural rigid polycyclic acids or flexible alkyl acids to generate lactones is described. The formation of lactones proceeds by a radical ion mechanism, which has been established by DPPH˙-mediated chemical identification, ESR spectroscopy and an enol intermediate trapping.

MATÉRIAUX

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Marque

Description du produit

59356-U

Supelco

Colonne de HPLC Discovery^® Cyano, 5 μm particle size, L × I.D. 15 cm × 4.6 mm

D60400

Sigma-Aldrich

2,3-Dichloro-5,6-dicyano-p-benzoquinone, 98%

59357-U

Supelco

Colonne de HPLC Discovery^® Cyano, 5 μm particle size, L × I.D. 25 cm × 4.6 mm

59586-U

Supelco

Cartouche Discovery^®Cyano Supelguard, 5 μm particle size, L × I.D. 2 cm × 4 mm

59357-U40

Supelco

Colonne de HPLC Discovery^® Cyano, 5 μm particle size, L × I.D. 25 cm × 4 mm