Synlett 2003(7): 1073-1074
DOI: 10.1055/s-2003-39323
SPOTLIGHT
© Georg Thieme Verlag Stuttgart ˙ New York

Zirconium Tetrachloride

Utpal Bora*
Medicinal Chemistry Division, Regional Research Laboratory, Jorhat - 785 006, Assam, India
e-Mail: utbora@yahoo.co.in;
Further Information

Publication History

Publication Date:
20 May 2003 (online)

The use of transition metal salts in organic synthesis is an emerging area of research. Due to their low toxicity (LD50 [ZrCl4, oral rat] = 1688 mgKg-1), [1] low cost, ease of handling, and high catalytic activity, the Zr(IV) compounds are potential green catalysts. ZrCl4 is a relatively weak Lewis acid, [2] which finds uses in Friedal-Crafts reaction, [3] Diels-Alder reactions, [4] asymmetric Diels-Alder reaction, [5] [2+2]-adduct formation, [6] and intramolecular cyclization. [7] The application of ZrCl4 in organic reactions is gaining renewed interests.

Zirconium tetrachloride may be prepared by chlorination of heated zirconium, zirconium carbide, or a mixture of ZrO2 and charcoal. [8]

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