1,3-Cyclopentadiene, 1,2-dimethyl- synthesis

5synthesis methods

Product Name:1,3-Cyclopentadiene, 1,2-dimethyl-
CAS Number:4784-86-5
Molecular formula:C7H10
Molecular Weight:94.15

Cyclopropane, 1,1-dibromo-2-methyl-2-(1-methylethenyl)-

40410-75-1
0 suppliers
inquiry

39968-66-6
0 suppliers
inquiry

4784-86-5
2 suppliers
inquiry

Yield:4784-86-5 99 % Chromat. ，39968-66-6 1 % Chromat.

Reaction Conditions:

with methyllithium in diethyl ether at -78; for 1 h;Mechanism;other alkenyl-gem-dibromocyclopropanes; reaction path for the carbene-carbene rearrangement leading to allenes and cyclopentadienes; 1,2-H migration in 3-cyclopentenylidenes derived from alkenyl-gem-dibromocyclopropanes;

References:

Holm, Kjetil H.;Skatteboel, Lars [Acta chemica Scandinavica. Series B: Organic chemistry and biochemistry,1984,vol. 38,# 9,p. 783 - 794]

96-39-9 Synthesis