1: N'-(cyclopropyl(p-tolyl)methylene)-4-methylbenzenesulfonyl hydrazide With dichloro bis(acetonitrile) palladium(II); lithium tert-butylate; 2-(dicyclohexylphosphino)-2',4',6'-tri-i-propyl-1,1’-biphenyl in 1,4-dioxane 0.0166667 h; Inert atmosphere; 2: para-bromotoluene in 1,4-dioxane T=90°C; 2 h; Inert atmosphere;

bis(η3-allyl-μ-chloropalladium(II)); caesium carbonate; 2-(dicyclohexylphosphino)-2',4',6'-tri-i-propyl-1,1’-biphenyl in acetonitrile T=80°C; 4 h; Inert atmosphere;

1.1: ethanol / |Reflux; |Inert atmosphere 2.1: dichloro bis(acetonitrile) palladium(II); 2-(dicyclohexylphosphino)-2',4',6'-tri-i-propyl-1,1’-biphenyl; lithium tert-butylate / 1,4-dioxane / 0.02 h / |Inert atmosphere 2.2: 2 h / 90 °C / |Inert atmosphere View Scheme

cyclopenta-1,3-diene in acetonitrile T=80°C; Equilibrium constantProduct distribution;

cyclopenta-1,3-diene in acetonitrile T=80°C; Product distributionEquilibrium constant;

1: (i) Mg, EtBr, (ii) /BRN= 1240527/ 2: aq. HCl, AcOH 3: (i) MeI, (ii) aq. NaOH View Scheme

1: aq. HCl, AcOH 2: (i) MeI, (ii) aq. NaOH View Scheme

(i) MeI, (ii) aq. NaOH; Multistep reaction;