ZINC-COPPER COUPLE Chemical Properties

Melting point:

419-420 °C (lit.)

storage temp. 

Store at RT.

form 

powder

color 

Gray-black

Water Solubility 

Insoluble in water.

Sensitive 

Moisture Sensitive

Safety Information

Hazard Codes 

F,Xi

Risk Statements 

11-36/37/38

Safety Statements 

16-26-27-33-36/37/39

RIDADR 

UN 3089 4.1/PG 3

WGK Germany 

3

HazardClass 

4.1

PackingGroup 

III

HS Code 

28530090

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

ZINC-COPPER COUPLE Usage And Synthesis

Synthesis

Zinc dust (9.8 g, 150 mmol) was added to nitrogen purged water (40 mL). The resulting slurry was then purged with nitrogen for 15 min. CuSO4 (0.75g, 4.7 mmol) was then added. The black slurry was fifiltered under nitrogen, washed with deoxygenated (nitrogen purged) water, acetone, and ether, and dried under vacuum. The couple can be stored indefifinitely in a Schlenk tube under nitrogen.

Chemical Properties

Black powder

Uses

Zinc-copper couple is used in the Simmons-Smith cyclopropanation reaction, Reformatsky reaction. It is used as a chemical for the selective, stereospecific reduction of alkynes to cis-alkenes. It is used in for deiodination of iodotributylstannylalkanes. In the presence of a free-radical initiator, it promotes the formylation of perfluoroalkyl iodides with DMF to give fluorinated aldehydes in high yield. It is used in dermatology.

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