87421-39-4

Basic information

• Product Name: dimethyl 3α-methylcyclopropane-1α,2α-dicarboxylate
• Synonyms: dimethyl 3α-methylcyclopropane-1α,2α-dicarboxylate
• CAS NO: 87421-39-4
• Molecular Weight: 172.181
• Mol File: 87421-39-4.mol

Chemical Properties

• CAS DataBase Reference: dimethyl 3α-methylcyclopropane-1α,2α-dicarboxylate(CAS DataBase Reference)
• NIST Chemistry Reference: dimethyl 3α-methylcyclopropane-1α,2α-dicarboxylate(87421-39-4)
• EPA Substance Registry System: dimethyl 3α-methylcyclopropane-1α,2α-dicarboxylate(87421-39-4)

Safety Data

• Hazardous Substances Data: 87421-39-4(Hazardous Substances Data)

Upstream product

• 557-91-5 1,1-Dibromoethane 
• 624-48-6 dimethyl cis-but-2-ene-1,4-dioate 

Relevant articles and documents

CYCLOPROPANATION OF DIMETHYL FUMARATE AND MALEATE WITH GEM-DIHALIDES CATALYZED BY Co(0)- OR Ni(0)-COMPLEX AND ZINC.

The reaction of bis(acetonitrile)bis(diethyl fumarate)cobalt(0) with dibromomethane gave diethyl trans-1,2-cyclopropanedicarboxylate in a 67% yield based on the cobalt complex. Dimethyl cis-1,2-cyclopropanedicarboxylate was obtained in a 52% yield from the reaction of dimethyl maleate with dibromomethane in the presence of acetonitrilebis(dimethyl maleate)nickel(0) accompanied by the formation of the trans-isomer in a 14% yield. The addition of zinc gave cyclopropanes in over 100% yields based on cobalt or nickel. 3-Methyl- and 3,3-dimethyl-1,2-cyclopropanedicarboxylic acid esters were produced by the reaction of dimethyl fumarate or maleate with 1,1-dibromoethane and 2,2-dibromopropane. The yield in the cobalt catalyst system decreases with an increase of substituents of gem-dibromides, while that in the nickel catalyst system does not vary appreciably.