An Efficient Synthesis of Tetrahydrobenzo[b]pyran Derivatives Using Sulfonic Acid Functionalized Silica as an Efficient Catalyst | Zendy

Ghodsi Mohammadi Ziarani | Zendy; A. Abbasi | Zendy; Alireza Badiei | Zendy; Zeinab Aslani | Zendy

Open Access

An Efficient Synthesis of Tetrahydrobenzo[b]pyran Derivatives Using Sulfonic Acid Functionalized Silica as an Efficient Catalyst

Author(s) -

Ghodsi Mohammadi Ziarani,

A. Abbasi,

Alireza Badiei,

Zeinab Aslani

Publication year - 2010

Publication title -

journal of chemistry

Language(s) - English

Resource type - Journals

eISSN - 2090-9063

pISSN - 2090-9071

DOI - 10.1155/2011/367613

Subject(s) - dimedone , pyran , malononitrile , catalysis , chemistry , sulfonic acid , nanoporous , solid acid , benzopyran , organic chemistry

Tetrahydrobenzo[ b ]pyran derivatives were efficiently synthesized by the reaction of appropriated aromatic aldehydes, malononitrile and dimedone in the presence of SiO 2 -Pr-SO 3 H as a nanoporous and recoverable solid acid catalyst, in good to excellent yields. Single crystal x-ray analysis conclusively confirmed the structure of the 2-amino-3-cyano-7,7-dimethyl-4-(4-methylphenyl)-5-oxo-4 H- 5,6,7,8-tetrahydro-benzopyran.

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